2008 GMC Acadia: hesitation when accelerating

Filed Sep 4, 2019 · Airbags, Driver assistance · MI

When I purchased the vehicle in less than an hour the check engine light, airbag light , tire pressure sensor popped on. The car would have a slow take off and shake as you accelerate on the city street. When I drive the freeway the car will hesitate and take 15 seconds before it switch gears to catch up to speed and jerk. The service airbag,service tire monitor system, service stabilitrak, service traction control alert messages are on the message console.

Filed Jun 26, 2016 · Driver assistance, Steering · 101,250 miles · MA

I noticed that when driving on an expressway and would attempt to pass a slower moving vehicle, as I would move into the passing lane and attempt to accelerate, the car would hesitate for a few seconds, lose speed, then suddenly downshift and accelerate at an unexpected rate. I also noticed that the car would unexpectedly accelerate or decelerate under normal driving conditions. I bought the vehicle to the dealer for repair, they responded that they could find nothing wrong, but the what I was experiencing was characteristic of the 6-speed transmission on the vehicle. The problem continued and I found it dangerous. I returned the vehicle and the dealer's remedy was to "reset the transmission computer." during this time, I also noticed that the "service stabilitrac and traction control" warning would come on. It dosen't matter if your driving or idle or in park these warnings and problems still exist.the dealer fixed one wheel sensor but the problem still occurs. The service airbag warning lights still comes on there was a recall for that I had it fixed but warning still comes on. This vehicle has had so many recalls automatic lift gate, air bag warnings, power steering pump and hose. The rack & pinion will need to be replaced in the vehicles short life span, all of the suspension parts bushings will have to be replaced at some point so this means control arm, sway bar sway, sway bar links toe links of course with these issues you will have to replace struts and shocks, etc...how can government/general motors sell a vehicle this expensive and have so many problems these vehicles are unsafe to drive something needs to be done about this before someone gets seriously hurt.my 08 gmc acadia is pure garbage someone needs to be held accountable because these vehicles have major mechanical and electrical issues, recalls and are unsafe to be driving

Filed Jun 24, 2016 · Transmission · 131,000 miles · FL

Tl* the contact owns a 2008 gmc acadia. While driving 35 MPH, the vehicle hesitated while the contact attempted to accelerate. In addition, the vehicle would not start when prompted on numerous occasions. The vehicle was diagnosed as having a faulty part within the transmission. The vehicle was not repaired. The manufacturer was not made aware of the issue. The failure mileage was 131,000.

Filed Nov 18, 2013 · Transmission · 67,500 miles · NC

Vehicle RPM's would start going up and down. Then there would be hesitation when you accelerated. I pulled out from doctor's office and it would not move in reverse or forward. Car had to be towed to a local mechanic.

Filed Nov 15, 2013 · Transmission · 55,600 miles · CA

I was driving home when my transmission suddenly started to lurch and hunt for gears, then hesitate. My car then wouldn't move forward nor would it go into reverse. Two codes showed up when I had the vehicle scanned, p2715 and p0700. After doing research I concluded the wave plate in my transmission had failed. My vehicle is no longer drivable. Thankfully I wasn't on the freeway when this incident happened because once the transmission quit the vehicle came to a stop rather quickly. In reading reports online it appears transmission failure of this particular model is highly probable and that gm knows it's an issue but has refused to recall the vehicle.

Filed Aug 29, 2010 · Acceleration, Driver assistance · 18,700 miles · NY

I noticed that when driving on an expressway and would attempt to pass a slower moving vehicle, as I would move into the passing lane and attempt to accelerate, the car would hesitate for a few seconds, lose speed, then suddenly downshift and accelerate at an unexpected rate. I also noticed that the car would unexpectedly accelerate or decelerate under normal driving conditions. I bought the vehicle to the dealer for repair, they responded that they could find nothing wrong, but the what I was experiencing was characteristic of the 6-speed transmission on the vehicle. The problem continued and I found it dangerous. I returned the vehicle and the dealer's remedy was to "reset the transmission computer." during this time, I also noticed that the "service stabilitrac and traction control" warning would come on. Onstar recommended I shut off the engine to reset the system. I found this only happened when I first used the car in the mornings to go to work. Again, the dealer said there was nothing wrong and the computers were showing no codes -- they also stated that they could not duplicate the problem. I got the car back from the dealer and it happened again - at 7:00 am. I called onstar and they gave me two codes. I bought the car back to the dealer and gave him the codes. It now seems that there were two defective sensors controlling the stabilitrac / traction control system and how they communicate with the transmission. I was told that gm is changing manufacturers on the sensors. I have not had use of the car since the beginning of june and am still waiting for gm to produce these parts. In the meantime, unexpected acceleration, deceleration, and gear shifting was occurring under all driving situations causing -- in my mind -- a danger to myself, my passengers, and others. The dealer has had the car on five different occasions since june 8. This last service they have had the car since july 20.