2015 GMC Acadia: sudden loss of power

Filed Aug 4, 2019 · Driver assistance, Electrical · 108,000 miles · MI

A few days before my girlfriend left with the SUV out of state I noticed the electric door lock (only on the passenger front door) was back to manual. Than the same day of trip it started working again, but on her way back she called me to say the light came on for service stabilitrak, and trac. Control off. It was also effecting the steering wheel making it jerk while going over 60mph on the highway making it a safety hazard. After reset jt was fine, but very alarming to continue to drive this SUV for years to come knowing it could pop up and safety issue at any given time. This needs to b addressed asap! Sounds like a ground issue. Suv is 4 years old, and rust and corrosion free. Maybe gm made an error with interior mounted modules. Also the vehicle was coming out of a slowing traffic area on highway at the time (construction zone) when tring to catch back up to speed the vehicle reduced power. (limp mode) this seems to b a very common problem.

Filed Aug 1, 2018 · Steering · 52,000 miles · PA

My car lost power steering while I was pulling out of a parking space and continued intermittently as I drove! The power steering pump had to be replaced because it was deemed to be leaking and failing. This is the exact same problem for which models 2007-2011 were recalled. Estimates to repair are about $1,000. I have lost the use of my car since july 14, repairs are scheduled for august 18, 2018. Completely dissatisfied with my dealer, bowser, pleasant hills, pa. This is the most umsafe care I have ever driven! The computer controls require driver to take eyes off the road to do everything! Voice controls never work properly. Computer system has been fixed twice then finally replaced. I tried to return car days after buying it and dealer refused.

Filed Jul 20, 2018 · Steering · 51,120 miles · PA

My acadia lost power steering making vehicle difficult to steer. I could hear a whining sound I'd never heard before. We took it to the closest repair shop since we were on vacation. Serviceman said the power steering pump was leaking and not working properly. Called dealer, bowser, immediately could not get an appt for 5 days. Dealer inspected vehicle, concluded the pump was not under power train warranty and estimated it would be over $1,000 to repair. Same problem as recall on previous models.

Filed Jul 12, 2018 · Acceleration, Driver assistance · 88,000 miles · AZ

On 15 plus occasions, while the vehicle is stationary, in the parking gear and running, the front end will start to vibrate mildly, increase in intensity and then the traction loss light illuminates, a blinking engine light illuminates, "service stabilitrak" and "service traction control" messages appear. Then traction contol off appears, followed by an audible loud click and vibration ceases, messages disappear and lights turn off. Once while vehicle in drive and being operated on a roadway, I pulled right at an intersection to have this same sequence happen during driving, resulting in an almost complete loss of power and acceleration and a near accident. The sequence was identical and once the errors cleared the vehicle accelerated rapidly and forcefully. I have documented multiple occasions on video while stationary over a multi month period and have furnished those documents to my local gmc dealership which has failed to repair this issue and today returned my vehicle to me with an apology for not being able to remedy the problem. They claim that the vehicle must exhibit this behavior in their presence to warrant a fix. The vehicle is under an extended warranty that clearly covers these problems. I would be happy to email the videos, but they are not in the supported format and likely larger than 5mb.

Filed Jun 26, 2018 · Driver assistance, Fuel system · 36,427 miles · FL

While driving in heavy city traffic, my warning lights came on for "reduced power", 'traction control" malfunction, 'stabilitrac and ABS lights came on. Power reduced to 25mph. I was close to the dealership and went there right away. The service writer told me I would have to wait at least 2 to 4 hrs before anyone could look at. My mileage was 36,432...432 miles out of bumper to bumper warranty...he told me the charges for diagnosing would be $130. I agreed. Then he explained that the the low hp fuel pressure/purge solenoid was stuck open, dianose codes were po191 and po496, they replaced a high pressre fuel pump, r&r intake plenum to replace fuel rail pressure sensor and replace a purge control solenoid. Cost to me was $1,760.51 ($866.06 labor- $820.43 parts -$30.00 misc.charge-$82.29 misc.discount- taxes of $126.31. I don't understand why they couldn't be more lenient with mileage on warranty. I purchased this vehicle new from them and have completed all my service work there. This was a scary situation in noon rush hour traffic without any roadside pull off at the time. Could there have been a defection fuel pump? I was told by service writer "if you had driven any further more damage would have happened to engine block".

Filed Nov 19, 2017 · Driver assistance, Electrical · 51,000 miles · OR

When driving stablitrac, ABS, all wheel drive fails giving alarms on the dash. Suv starts so shutter and loose acceleration. If the car is stopped and shut off it will clear. When you start driving again it will randomly do it again, such as when you turn a corner or pull out to pass someone. I has happened a couple of times. The last time was worse. I almost got hit because it lost power. Looking on line it looks like the same problem that other gmc vehicles have a history of.

Filed Feb 10, 2016 · Electrical, Engine · 34,000 miles · OH

Driving at 34-45 MPH lose all engine power and have to pull over. Vehicle totally loses all power. Engine shuts off.