GMC Complaints

After 2 years of owning the vehicle, after every oil change, it would indicate low oil just before an oil change causing for us to add an additional a quart of oil to keep it running smoothly. We informed the service technician of the situation on multiple occasions and no further inspection was completed, and just an oil change was serviced. After a few months we noticed the engine was running rough and a white smoke coming out of the exhaust on acceleration then the check engine light came on. We brought the car to get tires replaced and to service the check engine light, the technician stated that the check engine light a failure in the catalytic converter. We brought the vehicle to the local GMC service center, where they indicated that the we required a replacement engine because of catastrophic engine failure. We reported that the check engine light was due to catalytic converter failure. The service technician ensured that the priority was the replacement of the full engine not indicating what was the main cause of engine failure stating that the catalytic converter could have led to the failure of the engine as well. We replaced the engine, and after 3 months of vehicle being in the shop the engine was replaced. Three days after receiving the vehicle, a check engine light came on. We did not drive the vehicle until we had to return it back to the service center. The service technician stated that it is due to a lack of communication from the engine to the ECU. The technician called the following Monday stating that the check engine light was due the catalytic converter. We told the technician that was the primary reason that the customer the vehicle in the first place. We asked if there was an alternative to replacing the catalytic converter since we already paid 12k for the engine replacement. We asked if they had taken apart the catalytic converter to confirm its not a sensor issue. They replied that the codes indicates its the whole converter.

The contact owns a 2023 GMC Canyon. The contact stated that while driving 20 MPH, the vehicle came to an abrupt stop without warning. The contact waited for several minutes before resuming normal driving. The contact stated that the failure was caused by the rear brakes. The vehicle was not diagnosed or repaired. Neither the manufacturer nor the dealer was notified of the failure. The failure mileage was 14,129.

The contact owns a 2024 GMC Yukon. The contact stated that while a friend was driving at highway speeds, the vehicle suddenly experienced a loss of automotive power and stalled. The vehicle was towed to the local dealer, who diagnosed that the engine had failed and needed to be replaced. No further information was available. Additionally, the vehicle had previously experienced a loss of braking while driving with the cruise control activated. The contact stated that while driving at a slower speed, the vehicle lurched forward, striking a gate, and causing damage to the front bumper of the vehicle. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The contact was informed of the NHTSA Action Number: PE25001 (ENGINE, ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 16,000.

Vehicle sluggish upon acceleration. Transmission downshifts unexpectedly. Vehicle continues to rev bounce at steady acceleration and when driving at speed without acceleration.

03/08/2025 While at Interstate speed engine turned off as did the entire vehicle electrical system in the truck. Steering control was maintained (though not power assisted) and brake control was in the same position. Truck was brought to a safe position in the breakdown lane and a re start was attempted to find that engine would not rotate and a number of dash indications were displayed including check engine. No indication of low oil pressure light nor any other warning was displayed prior engine shutdown event were noted. Truck was taken to an independent repair center for evaluation. Initial inspection noted that engine would neither turn via electric starter nor by manual rotation of crank shaft with a socket and breaker bar. Truck may be inspected near owners residence. Safety risk was low due to the low traffic condition of the interstate travelled at the time.

Driving as normal when loss of power occurred due to engine failure (rod issue) Investigation # (PE25001)

The Vader Chrome on the front of vehicle is peeling. This includes the grille and surrounding areas. This area has been inspected by a representative at GMC and at a dealership. GMC refuses to stand by their product.

My air bag light keeps coming on saying to service it. I saw the recalled issues before with the other Acadias and was thinking maybe my year model would need to be looked into as well. I haven't ever had a wreck for them to come out but the light comes on frequently.

The transmission on this vehicle has given me problems. I have had the vehicle in a certified garage many times with complaints of a hard shifting transmission. First Chevrolet told me “it’s normal” but there is nothing normal about jerking so hard it throws a drink from a cup holder. Then I was told I needed a transmission wash. That was about $500 for it to “fix” the problem. Chevrolet told me the transmission was may or may not work and it may only be temporary. In my case it has reduced the hard shifting transmission but it’s still obvious. Now when I drive I remove my foot from the accelerator when it shifts from 1st to 2nd. I also make sure to keep a spill proof lid on my coffee because I never know when the transmission may throw it out of the cup holder.

Nuna is not responding to customers questions or concerns adequately. They continue to just send you to their recall page. Complaints are as follows: - They also aren't honoring their warranty and replacing or repairing carseats still under warranty. - This recall is also causing damage to other components of the carseat (such as the strap - fraying, other use issues) that Nuna is not addressing. - It took Nuna over 4 months to send out the repair kit. After I contacted them, not vice versa. - The recall replacement seat cushions are extremely difficult to get on the seats, not color matched (the main reason this matters is because customers paid higher prices for various colors and they aren't being made whole financially). This is clearly not a universal fit for all year models. Even adult men are struggling to get these cushions on the chair by pulling them incredibly hard to fit. -Their carseats associated with the recall are failing at random, not in predictable replicable ways. I've had several instances where a child was strapped in and tightened only to find the straps completely loosened as the destination. The variables of child weight in the seat and movement are not being factored into the safety tests associated with this recall. You are testing an empty seat completely cinched down - not realistic to everyday conditions when in use. -Once you repair the carseat it's difficult to get everything lined up perfect to know the button is functioning exactly as designed. I now pull aggressively on the seat straps multiple times every time before I take off to make sure all is well. That doesn't feel like a safety win. -Customers are left with fixing the issue themselves (lots of time spent!). Nuna takes no accountability. Nuna's responses have been horrible. Customer service gets an F. As a repeat customer I am extremely disappointed. I have explored all avenues with Nuna and as a result am filing a NHTSA complaint.