Owners have filed 529 complaints
about the 2018 GMC Acadia with NHTSA between 2018 and 2026.
The largest single group is the transmission & drivetrain.
Across this model's run it ranks 3 of 20 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 68
Against the median year of the GMC Acadia. 50 means typical for this
model; 100 means roughly double.
Severity — 34
6.6% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 94
55% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
NHTSA files every complaint against a named sub-assembly, not just a
system. This is the difference between knowing it was "the engine" and
knowing which part of it — the list to hand a mechanic.
Floor Shift
937.5%
Warnings
416.7%
Assist
312.5%
Automatic Emergency Braking
28.3%
Blind Spot Detection
28.3%
Column Shift
28.3%
Warning
14.2%
Warning
14.2%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
20.8%
1,000 – 9,999 miles
145.8%
10,000 – 24,999 miles
6928.7%
25,000 – 49,999 miles
11146.3%
50,000 – 74,999 miles
166.7%
75,000 – 99,999 miles
135.4%
100,000 – 149,999 miles
145.8%
150,000+ miles
10.4%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Apr 2018peak 25Aug 2026
Recalls on the 2018 GMC Acadia
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
United States — NHTSA
18V358000
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line.
Risk: A damaged fuel line can create a fuel leak, increasing the risk of a fire.
17V516000
POWER TRAIN:DRIVELINE:DRIVESHAFT
General Motors LLC (GM) is recalling certain 2018 Chevrolet Equinox and GMC Terrain vehicles and 2017-2018 GMC Acadia vehicles. The right front intermediate driveshaft may fracture and separate while driving.
Risk: If the front right intermediate drive shaft assembly separates while driving, the vehicle will lose propulsion, increasing the risk of a crash. If the assembly separates while parked on a grade, without the park brake engaged, the vehicle may move unintentionally, increasing the risk of a vehicle roll-away.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 202114610,859 units in Canada
Fabrics
Issue: Under certain testing conditions, the front seat material may not meet the flammability requirements of Canadian regulations. However, when the seat mat is tested in a fully assembled state, with all four layers, it meets all requirements. Safety Risk: This is a testing issue that does not affect vehicle safety. Corrective Actions: This is not a recall. The company has made changes to ensure that all new vehicles have fully compliant seat-vent mats.
Recall 201828973 units in Canada
Fuel System
On certain vehicles, a joint on the high-pressure fuel pump may have been improperly welded during the manufacturing process. Over time, this could cause the weld to crack and create a potential fuel leak. A fuel leak in the presence of an ignition source could increase the risk of fire, causing injury and/or damage to property. Correction: Dealers will replace the high-pressure fuel pump and high-pressure fuel pipe.
Reports where the owner recorded a crash, a fire, an injury or a death.
Azle, TXCrash
ELECTRICAL SYSTEM
The vehicle has experienced repeated electrical and engine-related malfunctions, including random engine shutdowns while driving and random no-start conditions. The thermostat and cooling system failed and were replaced in 2024. Multiple sensors have failed. The braking system remains noisy even after brake replacement. The lane detection safety system does not provide audible alerts. The vehicle is currently operational and available for inspection upon request. How was your safety or the safety of others put at risk? The vehicle has randomly shut off while driving on both highways and city roads in Azle, Texas. This occurred while my two children were in the vehicle. When the engine shut off, there was a risk of losing power steering and braking assist, which could have caused an accident, especially at highway speeds and in traffic. Has the problem been reproduced or confirmed by a dealer or independent service center? The thermostat and cooling system failure were confirmed and repaired by a service center in 2024. Electrical and sensor issues have occurred repeatedly but have not been fully diagnosed or resolved. Brake noise persists despite replacement. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? UNKNOWN. The vehicle has been serviced by repair facilities, but the manufacturer has not provided a definitive diagnosis for the engine shutdown and electrical failures. Were there any warning lamps, messages, or other symptoms prior to the failure? When did they first appear? Yes. Various warning lights and symptoms appeared prior to failures, including cooling system warnings and sensor alerts. Electrical issues and battery failures have occurred repeatedly, with batteries lasting only 2–3 years. Symptoms began after purchase and have continued throughout ownership. Additional details The brakes have been noisy even after replacement, and the lane detection system does not produce audible warni
NHTSA complaint #11716369 — an unverified report by a vehicle owner.
Azle, TXCrash
ENGINE
The vehicle has experienced repeated electrical and engine-related malfunctions, including random engine shutdowns while driving and random no-start conditions. The thermostat and cooling system failed and were replaced in 2024. Multiple sensors have failed. The braking system remains noisy even after brake replacement. The lane detection safety system does not provide audible alerts. The vehicle is currently operational and available for inspection upon request. How was your safety or the safety of others put at risk? The vehicle has randomly shut off while driving on both highways and city roads in Azle, Texas. This occurred while my two children were in the vehicle. When the engine shut off, there was a risk of losing power steering and braking assist, which could have caused an accident, especially at highway speeds and in traffic. Has the problem been reproduced or confirmed by a dealer or independent service center? The thermostat and cooling system failure were confirmed and repaired by a service center in 2024. Electrical and sensor issues have occurred repeatedly but have not been fully diagnosed or resolved. Brake noise persists despite replacement. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? UNKNOWN. The vehicle has been serviced by repair facilities, but the manufacturer has not provided a definitive diagnosis for the engine shutdown and electrical failures. Were there any warning lamps, messages, or other symptoms prior to the failure? When did they first appear? Yes. Various warning lights and symptoms appeared prior to failures, including cooling system warnings and sensor alerts. Electrical issues and battery failures have occurred repeatedly, with batteries lasting only 2–3 years. Symptoms began after purchase and have continued throughout ownership. Additional details The brakes have been noisy even after replacement, and the lane detection system does not produce audible warni
NHTSA complaint #11716369 — an unverified report by a vehicle owner.
Azle, TXCrash
SERVICE BRAKES
The vehicle has experienced repeated electrical and engine-related malfunctions, including random engine shutdowns while driving and random no-start conditions. The thermostat and cooling system failed and were replaced in 2024. Multiple sensors have failed. The braking system remains noisy even after brake replacement. The lane detection safety system does not provide audible alerts. The vehicle is currently operational and available for inspection upon request. How was your safety or the safety of others put at risk? The vehicle has randomly shut off while driving on both highways and city roads in Azle, Texas. This occurred while my two children were in the vehicle. When the engine shut off, there was a risk of losing power steering and braking assist, which could have caused an accident, especially at highway speeds and in traffic. Has the problem been reproduced or confirmed by a dealer or independent service center? The thermostat and cooling system failure were confirmed and repaired by a service center in 2024. Electrical and sensor issues have occurred repeatedly but have not been fully diagnosed or resolved. Brake noise persists despite replacement. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? UNKNOWN. The vehicle has been serviced by repair facilities, but the manufacturer has not provided a definitive diagnosis for the engine shutdown and electrical failures. Were there any warning lamps, messages, or other symptoms prior to the failure? When did they first appear? Yes. Various warning lights and symptoms appeared prior to failures, including cooling system warnings and sensor alerts. Electrical issues and battery failures have occurred repeatedly, with batteries lasting only 2–3 years. Symptoms began after purchase and have continued throughout ownership. Additional details The brakes have been noisy even after replacement, and the lane detection system does not produce audible warni
NHTSA complaint #11716369 — an unverified report by a vehicle owner.
Saint Paul, MN2 injured
POWER TRAIN
Shifting to park and vehicle stating the vehicle is not in park, won't let me turn the vehicle off. Transmission going out, brought to many shops letting me know that the transmission is not working properly but won't give an engine light if anything is wrong with vehicle, Wont show on readers what is wrong with vehicle. Electrical, Doors will automatically lock and unlock most times lock and locks me in the vehicle having me have to climb through the windows and having to leave my windows open or locks me out the vehicle and can only get in by climbing in the trunk. Testing has been done and brought to GM to figure out the issue, and they replace the computer in it but still has the problem. I have had shops tell me these are all huge issues that needs to have a recall because my vehicle is not the only GMC Acadia that does all this. How is any of this safe for me and my kids.
NHTSA complaint #11689335 — an unverified report by a vehicle owner.
Saint Paul, MN2 injured
ELECTRICAL SYSTEM
Shifting to park and vehicle stating the vehicle is not in park, won't let me turn the vehicle off. Transmission going out, brought to many shops letting me know that the transmission is not working properly but won't give an engine light if anything is wrong with vehicle, Wont show on readers what is wrong with vehicle. Electrical, Doors will automatically lock and unlock most times lock and locks me in the vehicle having me have to climb through the windows and having to leave my windows open or locks me out the vehicle and can only get in by climbing in the trunk. Testing has been done and brought to GM to figure out the issue, and they replace the computer in it but still has the problem. I have had shops tell me these are all huge issues that needs to have a recall because my vehicle is not the only GMC Acadia that does all this. How is any of this safe for me and my kids.
NHTSA complaint #11689335 — an unverified report by a vehicle owner.
Saint Paul, MN2 injured
FUEL/PROPULSION SYSTEM
Shifting to park and vehicle stating the vehicle is not in park, won't let me turn the vehicle off. Transmission going out, brought to many shops letting me know that the transmission is not working properly but won't give an engine light if anything is wrong with vehicle, Wont show on readers what is wrong with vehicle. Electrical, Doors will automatically lock and unlock most times lock and locks me in the vehicle having me have to climb through the windows and having to leave my windows open or locks me out the vehicle and can only get in by climbing in the trunk. Testing has been done and brought to GM to figure out the issue, and they replace the computer in it but still has the problem. I have had shops tell me these are all huge issues that needs to have a recall because my vehicle is not the only GMC Acadia that does all this. How is any of this safe for me and my kids.
NHTSA complaint #11689335 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 10,000 milesWhite House, TN
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that while parking the vehicle, the gear shifter was shifted into park(P); however, the message “Shift to Park” was displayed. The gear shifter was moved back and forth, then shifted into park (P) before the proper gear was recognized. The vehicle was taken to the dealer, and the gear shifter was replaced, but the failure reoccurred. The vehicle was taken back to the dealer, and the gear shifter, switch, and harness were replaced. The manufacturer was made aware of the failure. The failure mileage was 10,000.
NHTSA complaint #11755898 — an unverified report by a vehicle owner.
at 80,000 milesCedar Hill, TX
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that after parking and then attempting to turn off the vehicle, the message " Shift to Park" was displayed. The contact stated that the vehicle was able to be parked and turned off successfully after various attempts, which included restarting the vehicle and engaging the parking brake. The vehicle was not diagnosed or repaired by an independent mechanic or a dealer. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 80,000.
NHTSA complaint #11751749 — an unverified report by a vehicle owner.
Cutler BAY, FL
UNKNOWN OR OTHER
When trying to put car in park a "shift to park" notice appears on dashboard not allowing the car to be turned off. It takes multiple attemps be able to get the car into park and turn OFF. This has been an ongoing problem for several years and reported to the dealer. To date the dealer tells me there is nothing wrong with the car. Battery has been changed multiple times.
NHTSA complaint #11749867 — an unverified report by a vehicle owner.
New Bedford, MA, MA
UNKNOWN OR OTHER
While driving the temperature gauge drops from normal to cold , the dash displays " steering assist reduced" and the fan is very loud . My mechanic said the thermostat and or sensor needs to be replaced . When he resets with the reader its good for about a week and temperature gauge is normal. After seven days it repeats I only have 40,000 miles on the vehicle and its a 1,400 dollar job. I believe this should be a recall because i have seen a lot of the same complaints in this forum and what about the people who have the same problem but don't complain ?
NHTSA complaint #11749432 — an unverified report by a vehicle owner.
Stoneham, MA
STEERING
When I’m driving on the highway, I get a message on my dashboard saying steering assist reduced, drive with care. I have taken to the GMC dealership and they will not cover this repair even though it would be covered for 2021 GMC. When this happens, my car makes a loud noise and my steering wheel does not feel right. I do not feel safe.
NHTSA complaint #11748910 — an unverified report by a vehicle owner.
Weatherly, PA
POWER TRAIN
Gear shifter is not registering that the vehicle is in park. Because of this issue I have to sit in the vehicle for up to 15 mins trying to get it to register that it is in fact in park and can turn off. If I didn't take the time to do this, it would kill my battery. Unfortunately with the heat index, the vehicle gets hot very quickly and im now worried about getting hot stroke trying to get it to register it is park. This is a known issue with the vehicle that has an active recall for other vin numbers with the same issue.
NHTSA complaint #11748238 — an unverified report by a vehicle owner.
Windsor, CT
POWER TRAIN
Hesitants and Shudders when shifting into 2nd gear.
NHTSA complaint #11748054 — an unverified report by a vehicle owner.
Windsor, CT
ENGINE
Hesitants and Shudders when shifting into 2nd gear.
NHTSA complaint #11748054 — an unverified report by a vehicle owner.
Cottonwood, CA
STEERING
this is the second time I am having to replace gear shift with under 160000 miles. Turn the car off and it tells me the car is not in park when it is. It can not tell what gear it is in or when. AGAIN. This is the second repair
NHTSA complaint #11743789 — an unverified report by a vehicle owner.
Yamhill, OR
EXTERIOR LIGHTING
Shift to park Malfunction again, 4 th time!! 1000$ to fix is ridiculous
NHTSA complaint #11742706 — an unverified report by a vehicle owner.
Yamhill, OR
ELECTRICAL SYSTEM
Shift to park Malfunction again, 4 th time!! 1000$ to fix is ridiculous
NHTSA complaint #11742706 — an unverified report by a vehicle owner.
at 78,000 milesLannon, WI
STEERING
The contact owns a 2018 GMC Acadia. The contact stated while driving at undisclosed speed, the steering assist reduced warning light illuminated. The contact's husband attached a portable diagnostic tester to the vehicle, and P0128 was the failure code. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 78,000.
NHTSA complaint #11741369 — an unverified report by a vehicle owner.
Alpine, TX
UNKNOWN OR OTHER
When I put the shifter to park, it still dings and tells me "shift to park" and I struggle to make it go away and to be able to make it stop and be able to lock the car. It happens every time I drive it. Thank you
NHTSA complaint #11739333 — an unverified report by a vehicle owner.
Olive Hill, KY
ELECTRICAL SYSTEM
Shift to park error Vehicle won’t shut off
NHTSA complaint #11739392 — an unverified report by a vehicle owner.
Amarillo, TX
STEERING
I am getting the known P0128 code. My engine says it's cold when it's not, my AC isn't working, and I am getting a message that says "Steer assist reduced. Drive with care". This is a known problem and complaint of the GMC Acadia.
NHTSA complaint #11738997 — an unverified report by a vehicle owner.
Amarillo, TX
ENGINE
I am getting the known P0128 code. My engine says it's cold when it's not, my AC isn't working, and I am getting a message that says "Steer assist reduced. Drive with care". This is a known problem and complaint of the GMC Acadia.
NHTSA complaint #11738997 — an unverified report by a vehicle owner.
Lowell, AR
POWER TRAIN
the transmission kept slipping. the car continued to lose power until it just wouldn't go anymore. The mechanic said it is definitely the transmission and drive shaft but my particular VIN is not included. I am looking at $7,000 in repairs on a car I owe $13,000.00
NHTSA complaint #11738766 — an unverified report by a vehicle owner.
Lowell, AR
FUEL/PROPULSION SYSTEM
the transmission kept slipping. the car continued to lose power until it just wouldn't go anymore. The mechanic said it is definitely the transmission and drive shaft but my particular VIN is not included. I am looking at $7,000 in repairs on a car I owe $13,000.00
NHTSA complaint #11738766 — an unverified report by a vehicle owner.
Shelby Twp, MI
ELECTRICAL SYSTEM
For the last 6 months, I keep getting a "shift to Park" message on my dashboard indicating that my vehicle is not in park (in which it is). The problem is getting wors, so I called GMC on 5/14/26 to inquire and was informed that my VIN number WAS not include in the resent class action lawsuit for this issue. I then found out by searching myself on line for other complaints that GMC is very aware of this situation and yet refuses to fix the issue free of charge to customers. According to TSB 19-NA-206, t does list my year , make and model of vehicle affected by this faulty part. On 5.15.26, I called the dealership to inquire and was informed that my VIN was not covered under warranty (which I had already known), and that that service I would have to pay lots of money out of pocket for it. The service tech did look in the system and claims (without me even knowing that they had did that repair already....He lied I'm for sure). I informed him well if they did repair that part, and I'm still getting an error message about the same thing, clearly its faulty and the dealership should be responsible for fixing it. This was not the case as I was informed it would have to be out of my pocket. This mess is unfair! GMC is well aware of this faulty pat on vehicles, and to refuse to fix it free of charge is just down right hurtful! GMS is responsible for repairing this part on everyone's vehicle as it is a hazard to everyone and the community to have a vehicle unstable to be able to slide away from a parked position. This is such a road hazard, something has to be done about it. It's not far that I am expected to pay for these faulty wiring costs out my pocket when its a faulty issue GMC is very well aware of.
NHTSA complaint #11738057 — an unverified report by a vehicle owner.
Murfreesboro, TN
POWER TRAIN
I have a 2018 GMC Acadia SLT with the thermometer and temperature sensor that throws the steering assist error message, engine fan turns on and AC shuts off.
NHTSA complaint #11735300 — an unverified report by a vehicle owner.
Monroe, MI
UNKNOWN OR OTHER
When I put the car in park and shut off the vehicle, I am getting a shift to park message with an audible sound. The car is in park already. Happens every time almost. It’s not showing up as a recall under my vin. Just got the car. I have seen more recall issues on Google and am concerned those will also occur which are more serious and aren’t listed either.
NHTSA complaint #11734468 — an unverified report by a vehicle owner.
Nikiski, AK
POWER TRAIN
The contact owns a 2018 GMC Acadia. The contact stated that while the vehicle was parked and turned off, the “Shift-to-Park” warning light illuminated with a continuous audible alert. The vehicle was unable to recognize that the transmission was in park(P). Several attempts were needed to shift to park. The battery was disconnected to turn off the audible alert. The contact stated that the vehicle was previously repaired under an associated recall. During the recall repair, the shifter and wiring harness were replaced with Part Numbers: GM84955381 and GM84733196. The manufacturer was not notified of the failure. The failure mileage was unavailable.
NHTSA complaint #11734045 — an unverified report by a vehicle owner.
Nikiski, AK
ELECTRICAL SYSTEM
The contact owns a 2018 GMC Acadia. The contact stated that while the vehicle was parked and turned off, the “Shift-to-Park” warning light illuminated with a continuous audible alert. The vehicle was unable to recognize that the transmission was in park(P). Several attempts were needed to shift to park. The battery was disconnected to turn off the audible alert. The contact stated that the vehicle was previously repaired under an associated recall. During the recall repair, the shifter and wiring harness were replaced with Part Numbers: GM84955381 and GM84733196. The manufacturer was not notified of the failure. The failure mileage was unavailable.
NHTSA complaint #11734045 — an unverified report by a vehicle owner.
St. Joseph, IL
UNKNOWN OR OTHER
2018 Acadia Denali with less than 50,000 miles on the vehicle. Had to replace the coolant temperature sensor and thermostat. Less than 30 days later. The check engine light came on and the code was coolant temperature sensor and thermostat. Code P0128$07E8
NHTSA complaint #11733007 — an unverified report by a vehicle owner.
OKC, OK
UNKNOWN OR OTHER
thermostat and temp sensor issue
NHTSA complaint #11732763 — an unverified report by a vehicle owner.