hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
53,018 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2009 GMC Acadia engine problems

engine problem

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2009 GMC Acadia Owner Comments

problem #6

Jun 092014


  • 60,000 miles


The contact owns a 2009 GMC Acadia. The contact stated that the low beam headlight failed. The vehicle was taken to the dealer where the technician diagnosed that the low beam head socket on the drivers side melted. As a result, the technician stated the head light capsule needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the vehicle failed to accelerate. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failures. The failure mileage was 60,000.

- 804-462-5304, VA, USA

problem #5

Jun 072010

Acadia 6-cyl

  • 38,595 miles
The above mileage and dates are approximate--dealer and GMC (case #[xxx]) are aware of problem which involves a sudden power surge as I have been stopping at my mailbox, stopping at stop sign and pulling into parking place. Each time my speed was slow enough and my foot was on the brake, that I could maintain control while the rpms surged to over 4,000. I put transmission into neutral and shut engine off and, with restart, problem went away. Dealer has attached a monitor to try to identify the error code, but after a few weeks of having it in place, I returned to dealership and had it removed. The following morning it happened again as I stopped at my mailbox. I haven't been back to my dealer to report that incident. Vehicle now has just a few miles over 101,000 and there has been no recent issue of the same type. Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Ely, IA, USA

problem #4

Jul 012014


  • 50,000 miles
I have a 2009 Acadia slt2. I was entering the highway and accelerating when the car would not increase in speed as I was merging onto the highway. I was nearly hit by a semi-tractor trailer truck. The same problem has occurred multiple times after this. I have taken the car in for service and was told by a GM authorized dealer that they could not replicate the issue and they replace a coil. The car still does the same thing intermittently. This car has had other safety issues, like water leaking into the cabin and nearly shocking me while trying to drive.

- Stow, OH, USA

problem #3

Mar 112014


  • 89,000 miles


The contact owns a 2009 GMC Acadia. The contact stated that while driving 50 mph, the throttle became stuck without warning as the vehicle continue to increase speeds of over 90 mph. The contact stated that the driver was able to stop the vehicle by continuously depressing the brake pedal. The vehicle was taken to the dealer however, the technician was unable to diagnose the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileage was 89,000.

- Hudsonville, MI, USA

problem #2

Sep 022010

Acadia 6-cyl

  • 19,682 miles
When accelerating, my car seems to 'slip' or 'stutter' before clicking into gear. This happened in the first year of ownership. The dealership never acknowledged it when I would bring it in to get checked. After a few years of owning it I now know that it is a transmission issue very common with the GMC Acadia. I have read that it is a faulty wave plate. Not sure what that is but now with only 50,000 on my car it is really bad. It barely made it home last night. Transmission is totally slipping and even when just driving along at the same speed it went into limp mode. The gas revved like I was in neutral. This is extremely dangerous as I had a carload of girls on a trip to the mountains. What is it going to take until this causes an accident and casualties! GMC needs to step up and get this part recalled. It is a faulty part and they need to pay for the replacement!!!

- Danville, CA, USA

problem #1

Jan 022012


  • 60,830 miles
The contact owns a 2009 GMC Acadia. While driving approximately 80 mph, the contact depressed the break pedal but the brakes would not respond and the rpms abnormally increased to approximately 6,000. The contact was able to stop the vehicle after continually depressing the brakes. The contact heard a loud popping sound once the vehicle came to a stop and noticed smoke emitting from the front passenger side of the vehicle. The vehicle was taken to the dealer for diagnostics. The technician replaced the front and rear brake pads and rotors, and stated that the floor mat had become entangled with the accelerator pedal. He failure caused the vehicle to accelerate suddenly. The contact did not agree with the technician's diagnosis. The vehicle was repaired. The approximate failure mileage was 60,830. Updated 05/24/12

- Beloit, KS, USA

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