2019-2026 Chevrolet Silverado 1500 service guide ADAS Calibration & Module Programming

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Front of the engine bay, low and forward on the driver side, tucked behind the wheel-well / radiator-support area liner rather than mounted high on the firewall like older GM trucks.

Reach it from the front of the engine compartment. A felt / wheel-well liner panel in front of the driver side has to be pulled back to expose the module, which sits in a bracket carrier. Established tuner removal guides for 2019-2021 5.3L and 6.2L describe peeling the liner and unbolting the ECM carrier; the module carries the typical GM multi-pin connectors with colored locking levers. 2022+ refreshed trucks keep the same general front-of-bay zone.

Connector notes: GM-style ECM connectors with rotating/lever locks; module is VIN-locked and programmed in-vehicle via GM SPS, so swaps require reprogramming.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Internal to the transmission, mounted on the valve body / control solenoid assembly inside the trans (8L90 8-speed and 10L80 10-speed).

Not a separate cabin or engine-bay box on these trucks. The TCM is integral to the transmission valve body, so accessing it means dropping the transmission pan and reaching the valve-body-mounted control assembly. It is programmed in-vehicle via GM SPS after replacement.

Connector notes: Internal transmission pass-through connector to the valve-body control unit; VIN-programmed module, not a standalone bench-friendly external box.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Under the driver side dash, up behind the knee-bolster / lower trim, in the under-dash electrical zone.

Drop the driver side lower knee-bolster trim panel to reach up into the under-dash area; the BCM is identifiable by a cluster of multi-colored connectors (around six). Some access may require moving an HVAC duct out of the way. 2022+ interior refresh changes the trim panel detail but keeps the BCM in the driver under-dash zone.

Connector notes: Multiple multi-colored harness connectors (roughly six) plug into the BCM; it is a programmed module tied to vehicle options.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Under the driver side dash, up behind the knee-bolster / lower trim, in the under-dash electrical zone.

Drop the driver side lower knee-bolster trim panel to reach up into the under-dash area; the BCM is identifiable by a cluster of multi-colored connectors (around six). Some access may require moving an HVAC duct out of the way. 2022+ interior refresh changes the trim panel detail but keeps the BCM in the driver under-dash zone.

Connector notes: Multiple multi-colored harness connectors (roughly six) plug into the BCM; it is a programmed module tied to vehicle options.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Under the driver side dash, up behind the knee-bolster / lower trim, in the under-dash electrical zone.

Drop the driver side lower knee-bolster trim panel to reach up into the under-dash area; the BCM is identifiable by a cluster of multi-colored connectors (around six). Some access may require moving an HVAC duct out of the way. 2022+ interior refresh changes the trim panel detail but keeps the BCM in the driver under-dash zone.

Connector notes: Multiple multi-colored harness connectors (roughly six) plug into the BCM; it is a programmed module tied to vehicle options.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Under the driver side dash, up behind the knee-bolster / lower trim, in the under-dash electrical zone.

Drop the driver side lower knee-bolster trim panel to reach up into the under-dash area; the BCM is identifiable by a cluster of multi-colored connectors (around six). Some access may require moving an HVAC duct out of the way. 2022+ interior refresh changes the trim panel detail but keeps the BCM in the driver under-dash zone.

Connector notes: Multiple multi-colored harness connectors (roughly six) plug into the BCM; it is a programmed module tied to vehicle options.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Center of the vehicle on the floor, under the center console, mounted to the floor pan on a bracket beneath an acoustic pad / carpet flap.

Reach it from the cabin floor at the center of the vehicle. The center console and the carpet/acoustic cover over the module have to come up to expose the SDM on its floor bracket. Seats may need to be slid for working room. SRS service requires turning ignition off and disconnecting the battery before touching any SRS connector.

Connector notes: Yellow SRS connector(s) with positive-lock; module is crash-data (EDR) capable and is programmed/cleared with a GM-capable scan tool after service.

Disconnect the battery first and wait 3 minutes for capacitors to discharge.

Verify before relying on this - secondary sources only.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: In the instrument panel directly ahead of the driver, behind the cluster bezel/trim, in front of the steering column.

Remove the cluster trim bezel ahead of the driver to expose the cluster retaining fasteners, tilt the cluster out, and disconnect the harness. A documented platform issue is a main harness pinched behind the instrument panel near the parking brake (TSB-referenced). 2022+ trucks use a refreshed cluster/display, so bezel detail differs by year and trim (4.2-inch DIC vs larger enhanced display).

Connector notes: Rear cluster connector(s); IPC is VIN/odometer-linked and programmed via GM SPS after replacement.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: At the top of the steering column behind the steering wheel, integrated with the air bag clockspring (SAS coil) assembly on the column.

Reach it by removing the steering wheel and column shrouds to expose the clockspring/SAS assembly mounted on the column. The column itself is retained to the dash supports by a set of nuts if deeper access is needed. After any SAS/clockspring service the sensor MUST be recalibrated with a bidirectional scan tool, wheels centered.

Connector notes: Clockspring/SAS ribbon and column connectors; SAS is part of the clockspring assembly (e.g. AC Delco 13590209-family) and requires scan-tool calibration, not a bench operation.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: At the top of the steering column behind the steering wheel, integrated with the air bag clockspring (SAS coil) assembly on the column.

Reach it by removing the steering wheel and column shrouds to expose the clockspring/SAS assembly mounted on the column. The column itself is retained to the dash supports by a set of nuts if deeper access is needed. After any SAS/clockspring service the sensor MUST be recalibrated with a bidirectional scan tool, wheels centered.

Connector notes: Clockspring/SAS ribbon and column connectors; SAS is part of the clockspring assembly (e.g. AC Delco 13590209-family) and requires scan-tool calibration, not a bench operation.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: At the top of the steering column behind the steering wheel, integrated with the air bag clockspring (SAS coil) assembly on the column.

Reach it by removing the steering wheel and column shrouds to expose the clockspring/SAS assembly mounted on the column. The column itself is retained to the dash supports by a set of nuts if deeper access is needed. After any SAS/clockspring service the sensor MUST be recalibrated with a bidirectional scan tool, wheels centered.

Connector notes: Clockspring/SAS ribbon and column connectors; SAS is part of the clockspring assembly (e.g. AC Delco 13590209-family) and requires scan-tool calibration, not a bench operation.

Disconnect the battery first.

Verify before relying on this - secondary sources only.