Several GM vehicle models may feature two distinctively different-looking per-cylinder valve-cover-mounted ignition coils. This is due to a supplier difference and, according to GM, does not affect performance or serviceability.
This bulletin applies to 2013 - 2019 Cadillac ATS vehicles. Some customers may comment that the headlamp horizontal aim is out of alignment.
Some owners of 2007-2009 Cadillac SRX, 2007-2010 STS or 2008-2010 CTS equipped with all-wheel-drive (MX7) and 6L45 (MYA) or 6L50 (MYB) automatic transmission may comment that the vehicle has no forward or reverse gear at launch or has a grinding noise when forward or reverse gear is selected.
This bulletin involves 2015-2017 Cadillac ATS, SRX, CTS, CT6 and XTS vehicles. A snapping or ticking noise at the harmonic balancer may be heard, or sparks may be observed at the balancer.
This bulletin applies to 2010-2015 Cadillac SRX vehicles. In “rare” cases, the brake pedal may not raise or seem stuck down after a normal braking event.
This bulletin applies to 2012 Cadillac SRX models. DTC P062F may be set in the ECM, active or in history. This code can falsely set during a low battery condition. This can also trigger certain HO2S heater sensor codes (P0030, P0036, P0050, P0053, P0054, P0059, P0060, P0135, P0141, P0155 and/or P0161).
This bulletin applies to 2010-2013 Cadillac SRX models. A no-start or other concern may be experienced after swapping an ECM or other modules from one vehicle to another.
This bulletin applies to 2006-2014 GM passenger cars and trucks equipped with OnStar Gen 7, Gen 8, Gen 9 or FCP1. The OnStar system may not power up, with no LED illumination and/or no response from the OnStar button assembly. This issue may be accompanied by no communication with the scan tool as well.
This bulletin applies to 2013-2015 Cadillac XTS models. In “rare” cases, the brake pedal may not raise or seem to be stuck down after a normal braking event.
Owners of 2004-2013 Cadillac CTS models may comment about an SES light on, with no drivability concerns. The technician may find DTC P2097 or P2099. The most common concerns related to this condition involve the fuel injectors.
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