The bulletin discusses module damage from incorrect AFIT usage on GM vehicles equipped with direct fuel injection.
Owners of 2017-2019 GM vehicles, such as GMC Canyon and Acadia vehicles equipped with a 3.6L engine, may complain about a rattle, tick or knock type noise.
This bulletin applies to 2018 Cadillac ATS, CT6 and CTS models equipped with a 2.0L engine. On some vehicles, an electrical connection in the circuit board may fail in the engine control module (ECM). If this occurs, the MIL/Check Engine light may illuminate.
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 2013 – 2019 Chevy Malibu vehicles equipped with a 2.5L or 2.0L engine. The same engines are available in a number of GM vehicles including Buick Envision and Regal, Cadillac CTS, ATS and CT6, Chevy Camaro, Equinox, Impala and Traverse and GMC Acadia, Canyon and Terrain.
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.
This bulletin applies to 2013-2014 Cadillac XTS, ATS, CTS and SRX models. Some customers may comment on the SES light on. A technician may find DTCs P0097, P00F4, P0113, P2229 and/or P0102 set.
This bulletin applies to 2008-2014 Cadillac CTS vehicles as well as various additional GM vehicles. The purpose of the bulletin is to inform technicians of an issue that could cause internal module damage to the Body Control Module (BCM).
Some owners of select GM vehicles may comment on a low brake pedal during braking. See the application list at the end of this bulletin.
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