2013-2019 Cadillac ATS service guide ADAS Calibration & Module Programming

Documented for 2014 within this generation. Confirm the exact vehicle by VIN.

Part number

12656993

Notes

Parts reference: Historical physical Engine Control Module service part 12656993, ECU family E92, for 2014 Cadillac ATS with engine RPO LFX only. GM PIP5109D (March 2014), pages 1-2 identifies this exact named model/year/engine branch and service number. GM PI1353 (November 2014), pages 1-2 identifies 12656993 as the 2014 service number and prohibits its use for 2015. SI diagnostics must lead to ECM replacement; the original PQC parts restriction and questionnaire were historical policy, with no current restriction ending or ordering approval established. P0700 alone does not justify ECM replacement: diagnose the accompanying TCM DTC using SI. Questionnaire DTC prompts do not establish required fitment or eligibility gates. Body, trim, drivetrain, transmission, build interval, emissions and equipment allocation remain unverified; no universal Coupe or Sedan allocation is established. Match exact VIN, original module and current OEM catalog before replacement selection. Current ordering, supersession, availability, warranty eligibility, interchange, programming, cloning and repair capability remain unverified. No 2015, other engine, ATS-V, Corvette LT4, other model year or generation application is included. Hardware-label, serial and calibration identifiers are separate from this service part number.

Documented for 2015 within this generation. Confirm the exact vehicle by VIN.

Part number

12662034

Notes

Parts reference: USA historical physical Engine Control Module 12662034, ECU family E92, for 2015 Cadillac ATS with engine RPO LFX only. GM PIP5223B (January 2015), pages 1-2 identifies this named model/year/RPO reference; it does not allocate the part to every Coupe or Sedan, and body selection remains unresolved. SI diagnostics must lead to ECM replacement; the original PQC restriction was historical policy at issuance, not current ordering approval. P0700 alone does not justify ECM replacement: diagnose the accompanying TCM DTC using SI. For P06DA, P06DB, P06DC, P0325, P0327, P0328, P0330, P0332, P0333, P0340, P0341, P0335, P0336, P0011, P0010, P2088 or P2089, the bulletin directs PIT5307 engine-harness chafing inspection at the vacuum-pump pulley. Transmission, emissions, equipment and build allocation are not stated. Match exact VIN, original module and current OEM catalog; current replacement selection, supersession, availability, warranty eligibility, interchange and repair capability remain unverified. No other engine, ATS-V, CTS, XTS or adjacent-year application is established by this entry.

Documented for 2016 within this generation. Confirm the exact vehicle by VIN.

Part number

12659039

Notes

Parts reference: Historical physical Engine Control Module service part 12659039, ECU family E82, for 2016 Cadillac ATS equipped with the 3.6L LGX engine only. GM PIP5306B (April 2016), page 1 identifies this named model, year, engine and restricted ECM part number. The bulletin described a historical PQC engineering-feedback parts restriction after SI diagnostics led to ECM replacement; this process is not verified as current policy and no restriction ending or current ordering approval is established. Questionnaire items are diagnostic prompts, not additional fitment or eligibility requirements. No mandatory specific symptom or DTC gate is specified. Quantity, VIN range, body, trim, drivetrain, transmission, build, emissions and equipment allocation remain unverified. Match exact VIN, original module and current OEM replacement selection before ordering. Current ordering, supersession, availability, warranty eligibility, interchange, programming, key, cloning and repair capability remain unverified. No other engine, 2017 or other model year application is included. Hardware-label, serial and calibration identifiers are separate from this physical service part number.

Documented for 2016 within this generation. Confirm the exact vehicle by VIN.

Part number

12679078

Notes

Parts reference: Historical physical Engine Control Module service part 12679078, ECU family E82, for 2016 Cadillac ATS equipped with the 3.6L LGX engine only. GM PIP5306F (June 5, 2017), page 1 specifies this exact model, year and engine; the VIN-from, VIN-to and transmission columns each state ALL within that scope. The bulletin ended the historical PQC parts restriction and stated that the ECM could then be ordered through the normal parts catalog; this is not verification of current ordering, availability or VIN-specific selection. PIP5306F superseded PIP5306E to end that restriction. Unspecified successors are not an established supersession or interchange chain, and no relationship to another part number is established here. No mandatory symptom or DTC gate is specified. Quantity, body, trim, drivetrain, build, emissions and equipment allocation remain unverified. Match the exact VIN, original module and current OEM replacement selection before ordering. Current ordering, supersession, warranty eligibility, interchange, programming, key, cloning and repair capability remain unverified. No other engine or model year application is included. Hardware-label, serial and calibration identifiers are separate from this physical service part number.

Documented for 2017 within this generation. Confirm the exact vehicle by VIN.

Part number

12679078

Notes

Parts reference: Historical physical Engine Control Module service part 12679078, ECU family E82, for 2017 Cadillac ATS equipped with the 3.6L LGX engine only. GM PIP5306F (June 5, 2017), page 1 specifies this exact model, year and engine; the VIN-from, VIN-to and transmission columns each state ALL within that scope. The bulletin ended the historical PQC parts restriction and stated that the ECM could then be ordered through the normal parts catalog; this is not verification of current ordering, availability or VIN-specific selection. PIP5306F superseded PIP5306E to end that restriction. Unspecified successors are not an established supersession or interchange chain, and no relationship to another part number is established here. No mandatory symptom or DTC gate is specified. Quantity, body, trim, drivetrain, build, emissions and equipment allocation remain unverified. Match the exact VIN, original module and current OEM replacement selection before ordering. Current ordering, supersession, warranty eligibility, interchange, programming, key, cloning and repair capability remain unverified. No other engine or model year application is included. Hardware-label, serial and calibration identifiers are separate from this physical service part number.