2017 GMC Acadia: sudden loss of power

Filed Jan 4, 2025 · Engine, Fuel system · NJ

While highway driving, engine suddenly lost power and car could not exceed 5 mph. Was able to get off at next exit and get to a local garage. Mechanic inspected. Bolt connecting high pressure fuel pump to cylinder sheared off leaving bolt body in cylinder, bending fuel pump and caused oil to spray over entire engine compartment. Repair unlikely. Engine will likely need to be replaced. Car has always been maintained. No indication of failure prior to incident.

Filed Apr 6, 2023 · Steering · CT

Sudden loss of power steering due to steering pump failure. Wife was turning onto a busy road and the power steering went out causing her to almost hit oncoming traffic on the other side of the lane. Very serious and upsetting experience. In doing so research it appears this has been an ongoing issue with this vehicle and the previous model. Life safety issues such as this should be recalled at once before someone else’s wife and children are killed. Vehicle is currently at shop for replacement.

Filed Aug 26, 2022 · Brakes · TN

my car parking brakes will automatically come on while I am driving/ at a light or waiting to turn. I always push the brake pedal all the way down to decompress it and it is still hard to get going. This has put me in very dangerous situations causing my suv to lose power and often times if I am in the middle of a turn it locks up and make it hard to turn. I have took my car to the dealership twice and they have looked at my car and seems to not found a problem

Filed May 17, 2022 · Steering · AR

Loss of power steering: bought NEW late 2017: In 1st month a whining noise was present while turning the steering wheel in any direction (driving or in park) even when slightly turning the wheel. At the time, didn't seem to effect anything. Difficulty started around 80k miles & continued to get worse as time went on. Each time varies on type of turn, speed of turn, how long the car has been in use. On average: it starts (& continues to get worse) after the first 10/15 minutes of driving. Loss of steering comes & goes (not only happening while turning) for at least 4 -15sec. In the last year (mid 2021 - 2022) went to mechanic -couldn't find an issue. Husband checks fluid levels monthly (no changes/no leaks are visible ). As of May 2022 (130k miles) turning into parking lots/spots/driveways/etc I have NO power steering, my husband is barley able to turn the wheel during these events. Its unsafe to drive. Doesn't seem to be as bad if speed is 20mph or faster. Shudder issue (maybe @60kmiles): *We had this issue w/our 2012 Acadia too. Multiple GMC Certified mechanics have been used to correct this. Only one mechanic was able to witness the shuddering. All things tried have failed to correct it. First started happening between 35 - 55mph (now its at any speed: 10 - 80mph), speeding up used to make it shudder less, turning traction control off USE to make it shudder less. Plenty of forums abt this issue including all things tried & failed. No resolution. Shudder causes car to not accelerate at times. RPM jumps high & bounces around. AC would stop working (started @20k miles) it makes an air releasing noise when AC is in use. *2012 Acadia did this too. Adding Freon helps for limited time. No leaks. Mechanics "CND", its still not fixed. "Tighten fuel cap" warning comes on randomly. When checked, its tight. Automatic start fails randomly, since day 1. "Ck Engine" light comes on & off randomly. Main issue was the shuddering *Reporting date used for loss of power steering.

Filed Jan 3, 2021 · Electrical, Engine · 48,900 miles · WV

My 2017 gmc acadia shut off lost all power for a couple mins at a busy intersection in september 2020. All power restore after several minutes and attempts to restart. I took in to the dealership however they could not duplicate. Now on the 28th of december 2020, the vehicle lost all power again at the same busy intersection! No power at all! Could not even turn my hazard lights on to warn traffic that was coming up behind me on the highway! The vehicle remained like this for 10-15 minutes! Couldn't even have anyone push it off the road because we couldn't shift it to neutral either. I took it back to the dealership as gm advised and they still could not duplicate. The dealership tried but cannot make sense of why this keeps occurring randomly. I had my small children in the car this time and we are lucky we did not get rear ended! I fear that my family is not safe in this vehicle.

Filed Jun 9, 2019 · Steering · 64,916 miles · AR

On three separate occasions this vehicle has, with no warning, experienced a sudden loss of power steering for 2-10 seconds per event. #1 june - 2018 (aprox mileage 30k+): while exiting the freeway offramp and slowing below 40mph, my wife experienced a loss of power steering for 1-2 seconds before regaining power steering. Went to a local mechanic and he said everything looked to be ok, cnd (could not duplicate). #2 11-18-2018 (mileage 46171): while slowing and turning left into our drive way the car experienced a sudden loss of power steering for 5-10 seconds. I was able to bring the car to a stop and snap a picture of the following error msg: action required, steering assist is reduced drive with care. This time we went to the dealership where we purchased the vehicle with pictures and again cnd. #3 6-9-2019 (mileage 64916): while coming out of a left hand turn, at aprox 5mph and slowing, I began to navigate a right turn into a parking lot when I experienced a sudden loss and return of power steering. The incident lasted apron 2-3 seconds, enough time to her my passenger take a picture of the following error msg: action required, steering assist is reduced drive with care. I am taking this vehicle back to the dealership with pictures of the warning and mileage for a second time. I have notice that gm had recalled numerous vehicles with this problem from 2017 till now. The federal safety agency campaign number: 18v586. Gm's own number for this recall is 18289. Do these vehicles need to be added to initiate a fix?

Filed Sep 19, 2017 · Steering · 7,799 miles · IL

Power steering failed/ lose of power steering on 5 times ranging from 2 second to at least 6 second/steering lost at low speed going into driveway of garage/steering lost while car at red light in traffic waiting for green light to go