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TOPIC : Buick

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Electronic Brake Control Module

This bulletin applies to 2018-2019 Buick Enclave vehicles. The Service Parking Brake message may be seen, the red Park indicator may be flashing and/or the amber parking brake wrench indicator may be illuminated. Codes C056D or C056E may be stored, and other ABS codes may be found.

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Module Damage Caution

The bulletin discusses module damage from incorrect AFIT usage on GM vehicles equipped with direct fuel injection.

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Direct Inject Info

GM notes that 2008-2019 vehicles, such as Buick Cascada, equipped with a direct injection engine may exhibit black smoke, rough idle and minimal misfires on a cold start. Some customers may also state that the MIL is not illuminated.

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Please Release Me

This bulletin applies to 2016-2017 Buick Envision Essence vehicles. Some customers may comment that the rear park brake may not release and/or a DIC message “Service Park Brake” is displayed and/or a warning indicator is illuminated.

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GM Caliper Recall

GM has announced a recall for certain 2018-2019 vehicles including Chevy Equinox, Bolt EV, Cruze, Impala, Malibu, and Volt, Buick Regal and LaCrosse, Cadillac XTS and GMC Terrain, built from March 2018 to July 2018.

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Chevy Recall

General Motors has recalled certain 2018 Chevrolet Equinox vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line, with the possibility of a fire.

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Roll Away

This bulletin applies to a number of GM vehicles, including 2013-2017 Buick Verano models. A recall was announced due to the possibility of the electronic park lock lever potentially allowing the ignition key to be removed without the transmission being placed in Park.

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Piston Damage

General Motors advises inspection for piston damage when the MIL is on and the engine misfires and displays a ticking/knocking noise. This may be caused by an aftermarket ECM calibration/component and detonation that leads to melted pistons.

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Buick ECM

This bulletin applies to 2018 Buick Enclave, 2017-2018 LaCrosse and 2018 Regal vehicles. Some customers may comment that the MIL is on. The technician may find DTC P0459 (evaporative emission purge solenoid valve control circuit high voltage) set in the ECM as active or history.

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Radio Continues to Play

This bulletin applies to 2016-2017 Buick Cascada vehicles. Some customers may comment that when parking and turning off the vehicle, the radio continues to play after the driver door is opened. Technicians may find DTCs U1530 or U1534.

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