Service bulletins for the 2015 Cadillac ATS
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
1777 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Engine control module are shown. Show all
| PIP5628F | 2023-05-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D |
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| PI1489A | 2021-09-07. Service bulletin. BACK OVER PREVENTION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Malfunction Indicator Lamp (MIL) Illuminated, Intermittently Unable to Shift into Reverse, DTC P0502 Set |
| PI1489A | 2021-04-26. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Malfunction Indicator Lamp (MIL) Illuminated, Intermittently Unable to Shift into Reverse, DTC P0502 Set Condition/Concern Some customers may comment on a malfunction indicator lamp (MIL) illuminated. They may also comment that they intermittently are unable to shift into Reverse. When checking the vehicle for DTCs, the engine control module (ECM) may report P0502 as current or in history. This may be caused by water intrusion into the vehicle’s manual transmission output speed sensor or could be induced by the customer slipping the clutch for an extended period of time, as in holding the vehicle on a hill. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.