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.
This bulletin applies to 2011-2014 GM passenger cars and light-duty trucks equipped with OnStar. While diagnosing a vehicle with an OnStar concern, technicians may find DTC B101D-37 in the OnStar module (VCIM).
This bulletin from GM applies to all 2014 and prior cars and trucks. Some customers may comment on poor or no transmitter range when using the remote keyless entry (RKE) and/or remote vehicle start (RVS). In some cases, the range has been limited to a few feet.
This bulletin was released by Chevrolet, but the warning really applies to a multitude of vehicles. Some customers may complain of an SES light and a constant engine misfire. In some cases, they may also note a tick/knock noise.
Many vehicles are equipped with wheel nuts that feature a stainless steel cap/cladding, such as those used on 2012 and prior GM vehicles. When removing or installing wheel nuts with stainless steel caps, using a shallow socket may crack the cap causing corrosion underneath the cap and nut.
Apparently, General Motors does not endorse, support or acknowledge the need for fuel injector cleaning as a preventive maintenance procedure. According to GM, fuel injector cleaning is approved only when performed as directed by a published GM driveability or DTC diagnostic service procedure.
Input housing and shaft assemblies from transmissions have been incorrectly considered defective when air bubbles are observed coming from between the input shaft and the housing during an air check.
This bulletin applies to 2000-2012 GM passenger cars and light-duty trucks equipped with gasoline engines, where the SES light is on and any of the following fuel trim and/or O2 sensor-related codes are stored:
GM does not recommend resurfacing of the park brake portion of the rear brake rotor on vehicles that feature rear disc brakes.
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