check engine light comes on & simultaneously the A/C will not work. when I first researched there was information stating that the grease GM used in the drive train was too thick resulting in the thermostat not working properly. even though GM first acknowledged they caused the problem they are not issuing a recall to fix the problem. instead they want me to take my car to a dealership & pay approx. $2400 to turn off the sensor

- Sallisaw, OK, USA

Thermometer stop properly working. Check engine light came on. Ran fhe diagnostic code which confirms the Thermometer needs replaced. This began Dec 2023 - bought the vehicle in Oct 2023. Unsure if this was an issue prior. The cooling fan would kick on, and the temp gauge would stop working. Dealership was able to replace this and so far no further issues with the tempature reading.

- Cameron, MO, USA

Shift to park alert pops up when turning vehicle off. Vehicle is in park. This prohibits the vehicle from turning off. Per my investigation other gmc acadias made in 2017 also have experienced this which results into either prohibiting them from turning their vehicle off or their battery dying. This is a safety hazard because it increases risk of being stranded due to malfunction.

- Cameron, MO, USA

The contact owns a 2017 GMC Acadia. The contact stated while driving 20 MPH and accelerating to 25 MPH, the vehicle jerked and downshifted, and decelerated to 17-18 MPH. The contact stated that the failure occurred several times while driving. Additionally, the contact stated while driving 5 MPH and attempting to come to a complete stop, the brake pedal was depressed, but the vehicle shuddered and failed to respond. The check engine warning light was illuminated. The contact depressed the brake pedal harder, and the vehicle responded. The contact stated that the failure had been recurring while driving, causing him to shift to neutral(N) while depressing the brake pedal. The vehicle was taken to an independent mechanic, where the diagnostic test codes: P0010, P0016, P0018, and P0507 were retrieved. The mechanic determined that the engine and an unknown part needed to be replaced. The vehicle was not repaired. Two unknown dealers were notified of the failure and informed the contact the VIN was not included in a recall. The manufacturer was not notified of the failure. The failure mileage was approximately 75,000.

- Holmdel, NJ, USA

The contact owns a 2017 GMC Acadia. The contact stated that while driving at various speeds, the transmission was slipping, and the vehicle would not properly accelerate. The vehicle was taken to the local dealer who replaced the camshaft and timing chain however, the failure persisted. The vehicle was later taken back to the dealer who later replaced the transmission. After replacing the transmission, the check engine warning light remained illuminated. A diagnostic test was performed, and it was determined that the camshaft and timing chain was faulty. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 78,588. The VIN was not available.

- Spring Hill, FL, USA

Shift to park error light comes on when you are parking your car--cannot lock the car and all lights stay on--takes 5 or six tries --happens every time you move the car

- Wilmington, DE, USA

While driving and accelerating multiple light pop up on the dash and car decelerates. The check engine light, parking brake, car stability comes on. The engine shifts down and doesn-??t drive correctly. This happened 3 times while driving on the interstate doing the speed limit 55-70mph

- Lawrenceville, GA, USA

Steering assist reduced, drive with caution message displayed. Steering wheel sticks when turning. Apparently caused by a faulty thermostat and/or temperature sensor. Had both replaced several months ago. however, both the message and symptoms have returned.

- Palm City , FL, USA

The contact owns a 2017 GMC Acadia. The contact stated that while driving, the A/C unit became inoperable. The next day, while driving at a slow speed and approaching a stop sign, the START/STOP system engaged, and the vehicle stalled. The vehicle was restarted. The vehicle was taken to the local dealer however, the mechanic was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 51,000.

- Miami, FL, USA

Thermostat of the 3.6L LGX engine of General Motors fails. This causes systems to run radiator fan full speed and GMC Certified Service Center said can cause the engine to over-heat and damage. GMC Service center said that entire Thermostat unit (box) needs replacement and due to its location in the engine, it will take 6 hours of labor. They also recommended to flush the coolant and refill. If I google for this issue, its reported numerous times on Acadia forums and seems like a very common issue. Forum : https://www.acadiaforum.net/threads/steering-assist-is-reduced-drive-with-care.35790/#post-350364 https://www.acadiaforum.net/threads/2017-acadia-steering-assist-reduced-drive-with-care-message.32084/#post-321301 https://www.acadiaforum.net/threads/electric-power-steering-assist-warning.35258/#post-341562 Considering its happening on all years of GM models using 3.6 LGX engine and it can potentially cause engine to overheat and blow, I am requesting NHTSA to investigate this problem and work with GM to get a recall issued for this. Please have GM also cover costs of folks who have already fixed this issue with their own money, since the cost of fix is very very high. Thanks

- Bellevue, WA, USA

No incident yet. Although at 68,567 miles, it should not need J0780 Timing Cover Gasket replacement costing approximately $1847. Powertrain warranty was 5 year 65,000 miles. I purchased in April 2017, so April 2022 was 5 years. Unbelievable.

- Urbandale, IA, USA

GM put out notice in April 2019 stating side blind zone alert message due to water intrusion May cause issue with driver interface functions. Do not take your vehicle to dealership unless you believe there is a problem. Reimbursement by 4/30/2020 6 years 80,000 miles. Vehicle stopped working while parked in driveway. No start, no cranking, warning lights for security lock out, side crash detection, tire monitoring service and airbags displayed. Dome light for front door did not work while second row lights did work. Lift gate would not open. When stating issues to dealer prior to service were told they had not heard of anything that would stop a cars engine from functioning. Dealership repair stated this was due to rear blind side detection module and that the module shorted out cause all other circuits to go to ground, yet no fuses were blown. Starter fuse and relays were good. I asked dealer if this could have caused my car to stop while driving and they answered yes. Have corroded module and wire loom referee to as kit. Was told no way to circumvent system other than replacement.

- Westville , IN, USA

At roughly 50,000 there is a transmission line leak in the vehicle. GM has already recalled 2018-2020 model-year GMC Acadia SUVs and other models for this problem due to risk of fire. Whether it is the same cause or not, such a problem leads to the same risk.

- Troy, MI, USA

Vehicle went on fire in or near the engine compartment - the entire front end was burned and car is a total loss. I was in the vehicle driving home with my children (a 5 min drive from their school) and we smelled what we assumed was a a fire pit or fireplace burning nearby; we got out of the vehicle, within 90 seconds there were flames coming out of the hood. Car was well maintained and received nearly all service at the RVC GMC dealership it was purchased from. Vehicle was also still under the warranty we purchased.

- East Rockaway, NY, USA

I brought this car from STOOPS and have been having this same issue since I received this car in March of 2021. Check engine came on within two weeks of me getting this car. The Intake air pressure measurement system MAP sensor and MAF sensor on my 2017 GMC Acadia which is causing other issues. My car is only at 100k mikes and I shouldnt be having the same issue. The MAP sensor was replaced in July of 2021. Here it is a year later and my check engine light keeps coming on and saying the same thing which is causing all these other issues to happen such as steering power system reduced which driving. Notifications about of transmission and engine issues because of Intake Air Pressure Measurement System. Every time I take it to stoops they have it for a couple days and I-??m out of a car which means no transportation for work and within 10 days after I get it back the same issue appears. The car sounds like it-??s going to shut off at any given time I-??m driving. It shutters while at a light or in a restaurant line. It drives smooth but when I shut the car off it makes a whiny noise sometimes. I don-??t feel safe driving myself and my kids in the car when different things come up all because of this intake air pressure measurement system issue

- Anderson , IN, USA

The contact owns a 2017 GMC Acadia. The contact stated she noticed that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic for diagnostic test, but no failure was found. The computer was reset but after 60 miles of driving the check engine warning light illuminated once again. The manufacturer was not contacted. The failure mileage was 60,000.

- Oak Park, IL, USA

This Car, 2017GMC Acadia, started showing up on many occasions; and is getting worse. I park the car and put it into park. when I try to turn off the engine, a message shows up on the display SHIFT CAR INTO PARK. the car is in park, and I cannot shut off the engine, due to this message. The car IS in park, and the message tells me it is not. AND I CANNOT SHUT OFF THE ENGINE. I have to leave the car engine running until I try shifting gear shift back and forth multiple times and bingo sometimes the message goes away. Something is wrong here.

- San Diego, CA, USA

The contact owns a 2017 GMC Acadia. The contact stated when shifting the gear into Park, a warning message indicated to place the vehicle on park, but the vehicle was already in the Park position. The vehicle was taken to the dealer for diagnosis and was installed with a jumper harness. It was unknown if the repair rectified the failure. The manufacturer was contacted, and they stated that there was no recall associated to the failure. The failure mileage was 120,000.

- Oshkosh, WI, USA

The contact owns a 2017 GMC Acadia. The contact stated that the key fob was inoperable. The vehicle failed to start. The contact stated that the vehicle spontaneously locked. The contact was able to start the vehicle however, the vehicle failed to move. The vehicle was taken four times to the local dealer where it was diagnosed that the side blind spot module needed to be repaired. Additionally, the inter system malfunctioned. The vehicle was repaired; however, the failure recurred. The manufacturer was notified but no additional assistance was provided. The failure mileage was approximately 38,538.

- Rouses Point, NY, USA

Warning on dash steering assist reduced, drive with caution-?? after researching found there-??s a known defect in the thermostat that causes this steering issue, , GM issued a bulletin number..17-NA-158 Dated May-2017.. no recall as of yet but serious issue.. please look into this-?? [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Englewood , FL, USA