2023 GMC Acadia

Vehicle would not run due to a failed fuel pump control module. With a non-running engine, the transmission could NOT be placed into Neutral to be able to movie vehicle out of the road. Needed tow truck to move vehicle. This condition placed many people at risk as the vehicle could not be moved out of the way until a tow truck arrived.

I was driving on the highway, and the sunroof was closed and the cloth screen that would allow or not allow sun to come through was also closed. Then out of nowhere there was this explosion sound which scared me so much, I almost wrecked the car and at first, I thought maybe someone shot at my car and shot one of my windows but as I got to the side of the road I realized that none of my windows in the car had been shot and that it was the sunroof and I noticed that cause pieces of glass came into the car from the sides of the cloth barrier. This happened so fast and was so loud that it almost caused me to hit the other car in the lane to the left of me on the highway. Thank goodness I was able to react fast and pull the car back into my lane. I contacted the dealership and they indicated that they had not heard about this before and that I would need to talk with the service department but that it is closed now and not something that would typically fall under warranty. I did check online and see that this is a known issue for this vehicle so I don't understand why it would not be fixed cause it is going to hurt someone at some point. I am trying to get someone to look at it to get it fixed. There was no warning of anything. It just exploded all of the sudden and glass was all over.

The contact owns a 2023 GMC Acadia. The contact stated that while driving on the highway at an undisclosed speed, the vehicle stalled, and the engine lost automotive power. The vehicle was able to restart. During a second failure, the vehicle lost automotive power and stalled in the middle of the highway, and the vehicle was unable to restart. An alert message was sent by OnStar reporting a transmission or engine failure and advised that the vehicle needed immediate service. The vehicle was towed to the dealer where it was diagnosed with a fuel pump module failure. The manufacturer was not notified of the failure. The failure mileage was 24,749

Infotainment system freezing, screen shaking, touch screen not working, disconnecting from android auto, unable to connect to phone.

My 2023 GMC Acadia experienced a complete electrical system failure while driving on an interstate highway. During the incident, the vehicle lost all electrical power, including hazard lights and steering assistance, and could not be shifted into neutral. The vehicle became immobile in active traffic and required police-ordered towing due to safety risk. This incident was the second alternator failure within six months. The second failure involved a GM-installed replacement alternator that failed prematurely. Both incidents required towing, and the second created a significant roadway safety hazard.

Temperature gauge dropped to zero or no reading, message displayed on screen "Steering Assist Reduced, Drive with Care", continued to drive speed limit, when parked fan runs after car is shut off, in a few days the temperature gauge started working again, then the cycle repeats about once every 2 weeks for a couple months before engine light came on last week & when checked at a local parts place was told temperature sensor malfunction. Read multiple accounts of this same issue online

My 2023 GMC Acadia consistently makes a sound at lower speeds when it is changing gears. For example, accelerating or accelerating for stoplights. The sound is kind of a ka clunk. The technician can find nothing and does hear the sound when we go for a test ride. I am worried that the sound indicates a transmission problem. The VIN search does not show a recall for my vehicle.

TELEMATIC CONTROL MODULE WENT OUT. ON RESEARCH, IT IS A COMMON PROBLEM AND THERE IS NO FIX BECAUSE THE MODULE IS BACK ORDERED. NO TIME GIVEN FOR WHEN AVAILABLE. WE WOULD LIKE TO ADD OUR NAME TO SEE IF IT CAN BE INCLUDED IN A RECALL. [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2023 GMC Acadia. The contact stated that the vehicle was taken for maintenance, and the tech informed the dealer that the passenger’s side rear suspension toe link needed to be replaced. The vehicle was taken to an independent mechanic who confirmed that the passenger’s side rear toe link needed to be replaced. The vehicle was repaired. The contact stated that no warning lights were illuminated. Upon further investigation, the contact related the failure to Manufacturer's recall number: N222364330; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was 42,101.

While driving under normal conditions, the vehicle experienced a sudden, violent deceleration. The emergency braking and collision avoidance systems activated spontaneously, as if the vehicle had struck or was about to strike an object. There was no obstacle, impact, or external threat present. This uncommanded braking caused significant physical stress and injury to the occupants. Critically, multiple safety systems failed during the event: The seat belts did not lock, failing to restrain the occupants; The airbags did not deploy, despite the severity of the deceleration; no warning indicators or diagnostic alerts were present before or after the incident. These failures directly contributed to physical injuries, including TBI (concussion, spinal trauma, etc.) which required emergency medical treatment and ongoing care.

The contact owns a 2023 GMC Acadia. The contact stated that with the stop/start feature activated and while attempting to park the vehicle, the accelerator pedal was slightly pressed in order to slowly move the vehicle forward. The vehicle suddenly experienced unintended acceleration and drove forward, over a curb, and crashed into a tree. During the crash, the front end of the vehicle sustained severe damage, but no air bags deployed. No injuries were reported, and no police report was taken. The cause of the failure was not determined. The contact indicated the failure had occurred on multiple occasions. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 5,665.

The contact owns a 2023 GMC Acadia. The contact stated that after purchasing the vehicle, it was discovered that there was water and condensation inside the rear middle brake light assembly. The contact later discovered that during rainstorms, rainwater had leaked into the rear seating and hatch area of the vehicle. The vehicle was taken to the local dealer who determined that the failure was due to a manufacturing structural error and the vehicle needed body work to be performed to correct the failure. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 5,200.

From the day that I’ve gotten this vehicle it has been burning oil and water like crazy. There is no reason I should be putting a quart of oil every couple weeks

I've had the engine stall before coming to a complete stop on several occasions. It also has been shifting hard and has had a delayed shift. The other day all of the lights to to screen and speedometer completely went out while driving then randomly came back on. That's the only speedometer I have is the digital screen.

Backup camera failed. Same issue on 2021 Acadia SLT Needs to be investigated on 2023 models

The contact owns a 2023 GMC Acadia. The contact stated while driving 55 MPH, while attempting to depress the brake pedal, the contact heard an abnormal sound coming from the brakes. A dealer and independent mechanic were contacted. No warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the brake pads wear was uneven on the driver’s side and the driver’s side front caliper needed to be replaced. The vehicle was then taken to the dealer where it was diagnosed; however, the result was not provided. The brake pads were replaced; however, the caliper was not yet replaced. The manufacturer was notified of the failure, and informed the contact to take the vehicle to the dealer for assistance. The approximate failure mileage was 39,000.

I am experiencing a recurring P04FB diagnostic trouble code on my 2023 GMC Acadia, related to the crankcase pressure sensor. GM issued Bulletin No. PIP5841C, which attributes the issue to moisture buildup freezing inside the sensor. Their recommended fix is to remove the sensor, blow out any moisture, and reinstall it. However, this is not a permanent solution—the code returns within days, suggesting an inherent design flaw in the PCV system. Additionally, the replacement sensor (Part #12718935) is on national backorder, making it impossible to obtain. Many owners across multiple GM models using this engine (such as the Chevrolet Blazer and Cadillac XT4) are experiencing the same problem, yet GM has not provided a real solution. A properly designed PCV system should not allow excessive moisture to accumulate in the sensor. Instead of addressing the root cause, GM’s bulletin merely delays the issue by temporarily clearing the moisture. This approach does not prevent the problem from recurring, and it does not fix the underlying defect. If the sensor fails or provides inaccurate readings, it can affect emissions and engine performance. The fact that the replacement part is unavailable suggests GM may be restricting access to it, possibly because they know it is defective. This raises concerns that GM is quietly managing a widespread issue rather than issuing a formal recall or warranty extension. I am requesting that the NHTSA investigate this issue, as GM's current approach does not resolve the problem. Owners should not be forced to repeatedly clear moisture from a sensor that is failing due to a design flaw. If GM has internally identified a better solution, it should be made available to affected owners instead of delaying action with ineffective temporary fixes.

On 11/26/24 my wife was running errands in her vehicle when the power shut off and killed the car. She was in the left lane of a busy state highway. She was able to coast off the road slightly before the vehicle came to a complete stop. The dashboard said to press brake and start button, but the car would not start. The vehicle was also stuck in drive and would not switch to park, neutral, or any other gears. Police came and had to push her vehicle with theirs into a nearby park lot so a tow truck could pick it up. It is currently at a GM dealership waiting to be looked at.

See attached document for complaint.

The contact owns a 2023 GMC Acadia. The contact stated that on several occasions while driving at various speeds, the vehicle began jerking with the "Service Stabili-trak" message displayed. The vehicle was taken to a dealer but was not diagnosed; however, the dealer tightened the battery terminal. The contact stated that the failure persisted. The manufacturer was notified of the failure. The failure mileage was 31,000.