What are the most common GMC Acadia problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2012 GMC Acadia has 6 documented issues. The most frequently reported are: 6T70/6T75 3-5-Reverse Wave Plate Fracture — Loss of 3rd, 5th and Reverse, Electric Power Steering (EPAS) Failure and Loss of Assist, 3.6L V6 Timing Chain Stretch and Premature Failure. Of these, 4 are rated critical and should be addressed promptly.
Is the GMC Acadia reliable?
The 2012 GMC Acadia has 6 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: 6T70/6T75 3-5-Reverse Wave Plate Fracture — Loss of 3rd, 5th and Reverse and Electric Power Steering (EPAS) Failure and Loss of Assist and 3.6L V6 Timing Chain Stretch and Premature Failure and 3.6L V6 Internal Water Pump Failure and Coolant Leak. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common GMC Acadia problems?
Repair costs for known GMC Acadia issues range from $120 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 6T70/6T75 3-5-Reverse Wave Plate Fracture — Loss of 3rd, 5th and Reverse, typically costs $1,800-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2007-2012 GMC Acadia 6T70/6T75 3-5-Reverse Wave Plate Fracture — Loss of 3rd, 5th and Reverse?
The 35R clutch wave plate inside the 6T70/6T75 six-speed transaxle cracks and fractures, allowing the 35R clutch piston to overstroke and leak apply pressure. The result is a hard flare or slip in 3rd and 5th gear and eventually a complete loss of reverse. Failures typically begi… Repairs typically run $1,800-$4,500. Severity: high.
What is the 2007-2016 GMC Acadia Electric Power Steering (EPAS) Failure and Loss of Assist?
GM special-coverage bulletin 10248773 covers specified 2007-2011 GMC Acadia vehicles with power-steering pump wear that can intermittently reduce hydraulic pressure and steering assist. Manual steering remains available but requires greater effort, especially at low speeds. Severity: high.
What is the 2007-2016 GMC Acadia 3.6L V6 Timing Chain Stretch and Premature Failure?
GM bulletin 12-06-01-009D covers 2007-2012 GMC Acadia vehicles with 3.6L High Feature V6 engines (RPO LY7 or LLT) and timing-chain correlation DTCs P0008, P0009, P0016, P0017, P0018 or P0019. Severity: high.
What is the 2007-2023 GMC Acadia 3.6L V6 Internal Water Pump Failure and Coolant Leak?
GM customer-satisfaction bulletin 13079 covers certain 2009-2013 GMC Acadia vehicles with 3.6L High Feature V6 engines (RPO LY7 or LLT) that may experience leakage from the water-pump shaft seal, often after operation with low coolant. Severity: high.
What is the 2007-2018 GMC Acadia Front and Rear Wheel Hub Bearing Assembly Failure With Integrated ABS Tone Ring Degradation?
The Lambda-platform hub bearing assemblies wear early — owners report failures well under 60,000 miles and, on the rear, repeat failures on the same vehicle. Two distinct symptoms come from one part: mechanical noise (a speed-dependent hum or growl that changes when the vehicle i… Repairs typically run $250-$800. Severity: medium.
What is the 2007-2021 GMC Acadia HVAC Blend Door Actuator Gear Stripping — Clicking Dash and Cold Air on One Side Only?
The dual-zone HVAC case uses several small plastic-geared blend/mode door actuators. The gear teeth strip or the door binds, so the actuator hunts for its calibration position and produces a repetitive clicking or ticking from behind the dash or glovebox. The classic complaint is… Repairs typically run $120-$450. Severity: low.
