2012 GMC Acadia Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 GMC Acadia

Service brake system message, sometimes Service Stability, red brake light and TRAC OFF message.
These are sometimes the result of low brake fluid, but no obvious leaks are noted. Due to the design of the master cylinder and brake booster, the master cylinder can leak from the rear seal and collect inside the booster, leaving no drops on the ground or obvious signs.

You will need to replace the master cylinder and booster to correct.

A Loose or worn gas cap may cause Check Engine Light to illuminate.

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It acts like a dirty or clogged fuel filter or a slip in the tranny. The check engine light is not coming on and there is no codes available. Took to a dealer and they stated nothing is wrong with vehicle...they suggested to clean the injectors. Which was done and problem still exist. The problem...

there is a car with a lock symbol comes on my car and the car won't start. what can I do to fix that or what need to be fixed. Thank you.

Ryan

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The power liftgate may fall suddenly from the open position due to the failure of the struts that support it when open. Dealers will update the software for the liftgate actuator motor control unit to prevent rapid closing of the liftgate free of charge to resolve the problem.

In the affected vehicles, there is a flexible steel steel cable that connects the seatbelt buckle to the front seat frame. Over time the cable may fatigue and separate. If the steel cable separates, the seatbelt may not properly restrain the seat occupant, increasing the risk of an injury in a crash. Dealers will inspect and replace the affected seatbelt buckles (lap pretensioners) to correct this concern.

Increased resistance in the front seat mounted side impact air bag (SIAB) wiring harness can result in the SIAB and seat belt pretensioners not deploying as expected in the event of a crash, increasing the risk of personal injury. Dealers will replace the affected harness connections with soldered connections to correct this concern.

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