2021 GMC Acadia

Car was parked overnight in my garage and in the morning it would turn over, but not start. Had to have it towed to my GMC dealer, but had great difficulty moving the car out of the garage because the transmission remains in PARK if the engine is not running. Had this happened on a highway while driving and without a place to safely get off the road ( which HAS happened to others who have made this same complaint to NHTSA), this could have been an extremely hazardous situation for the occupants of the vehicle. The engine will suddenly shut down, power steering is lost, and power braking will also be lost. This problem was diagnosed as a failed fuel pump module. The failed part was replaced by the dealer (GM part#13554820). The service manager acknowledged that this is a known and common issue and that GM is aware of it but has not issued a voluntary recall. The manager also advised that this part has not been updated and that it may fail again without warning. Please....this is a serious safety issue that needs to be addressed before someone is injured or killed while abandoning a car stalled in traffic that cannot be moved.

Instrument cluster malfunction. Entire instrument cluster blacking out every 60 seconds, then rebooting nonstop while driving. While this was occurring, none of the advanced driver assistance systems functioned, nor did the speedometer or other gauges. This occurred while on a trip, and meant having to travel a long distance without having emergency braking, collision warnings or the ability to monitor speed. The car was taken to local dealer and they replaced the entire instrument cluster.

The fuel pump control module failed, 2021Acadia Denali First time, 9/22/21 8073 miles, the car was parked at the residence under the car port, when needed, the car would not start. No check engine or other indicators. Car was towed to dealer for repairs under warranty. Second time, 10/6/23 31879 miles, we were driving the car on a rural road, 55 mph speed limit with no shoulders when the car stopped in a curve. Had to flag down cars to keep them from hitting us for an hour till the wrecker loader it on the truck to take back to same dealership for warranty repairs. Third time, 7/29/25 48199 miles, we were again on a rural road 55 mph speed limit when the car stopped with my 71 year old wife alone in the car, again in a curve. This time there was a check engine light. I drove my truck to pick her up and assist her until the wrecker came. This time with luck I was able to restart the car and I followed her to our home where the tow truck picked it up and brought it to the same dealership for the third time for repairs under warranty. All three times the culprit was the fuel pump control module. Each time it was the same code in the ECM. Each time the dealership said they did a full check on the fuel system, pump, etc. and only replaced the fuel pump control module.

Driving out of state. My 2021 Acadia with 41,172 miles. When pushing the gas to go there is slippage when trying to accelerate. MY car went automatically into neutral saying transmission and then not start. After a rest period it would start then repeat the same issue. In bumper to bumper traffic on I75. The most Terrifying & UNSAFE place to be at 75 to 80 mph. We happened to be driving up on construction and slow down traffic. When the car stalled. Towed it to a transmission place because of code. They replaced the DTR1 PCM.

Driving on rt 95n in Ga. Going 70 mph and vehicle just bucked and shut off. At the time I was in the middle lane and almost got hit by a tractor trailer while I was trying to get to the right side of the road. Called general motors roadside assistance and they supplied a tow company to tow me to a dealer in Ga. About 35 miles away unfortunately it was Sunday dealer was closed and I had to get a taxi to take me to a hotel with all my luggage. On Monday morning when the service dept. Opened they advised me the fuel pump module had failed and would be replaced. Luckily most times when vehicles shut off with push button electronically shifted transmissions you can't put the vehicle in neutral to move or tow but after many tries it went to neutral(according to the tow driver) also after researching my vehicles failure I found this is a wide spread problem among many gm suvs and trucks! Hopefully a recall is in the future before someone gets killed!!

The contact owns a 2021 GMC Acadia. The contact stated that the navigation screen was inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The dealer suggested replacing the unit. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 107,000.

The Radio in my 2021 GMC Acadia had to be replaced due to an UPDATE Failure. I had to pay $221.32 for diagnostic and $1,580.18 for a new Radio. My Husband and I are the original owners of the 2021 GMC Acadia. My Dissatisfaction is why are some GMC products under recall for this issue but my 2021 GMC Acadia not part of the recall. The Hands free calling was not working, the GPS and also affected the back up Camera. all of these . a response is requested

The contact owns a 2021 GMC Acadia. The contact stated that after a routine maintenance at the local dealer, it was noticed that the radiator was leaking coolant. Upon further inspection, the contact and his son noticed that the driver’s side of the radiator was corroded. No warning light was illuminated. The vehicle was not repaired due to the cost. The manufacturer was made aware of the failure. The failure mileage was approximately 32,175.