2020 GMC Acadia bucks/hesitates when I take off or slow down and speed back up. Mechanic looked at it can see engine is having random misfires. We have tried plugs, transmission fluid, looked at everything we could think of. The condition improves if I put into AWD but still exists and worsens for a period of time after it shifts back into FWD mode. My mechanic has done a lot of research and found that one possible issue was a stretched timing chain but since it is out of warranty I just couldn't afford to have them tear it down it is an enormous job to see if that was the issue. It also lines up with other known issues like the auto stop issues and possibly a fuel pump issue. I have seen many people complaining online about this particular issue but not many on here and no recalls on my vehicle regarding the known issues
GMC Acadia hesitation problems
54 of the 5,599 owner complaints about the GMC Acadia describe hesitation when accelerating, most of them for the 2017 model year.
- owner complaints
- 54
- worst model year
- 2017
- typical mileage
- 61,000
By model year
Often reported together
Check engine light 11Jerking 9Stalling 8Transmission failure 4Shudder 4Won't start 3Slipping 3Misfire 3
Trouble codes mentioned
P2715 1P2635 1P0796 1P0700 1P0420 1
What owners say
2015 gmc Acadia, vin ending 7457,p2635,stuttering/hesitation and engine stalling when Arizona temperatures exceed 100* f , and mechanic advising that the condition corresponded to a known gmc issue for which they could not obtain an applicable corrective part / repair
The contact owns a 2025 GMC Acadia. The contact stated that while driving uphill at an undisclosed speed, the vehicle hesitated, jerked, and stalled. The vehicle was taken to the dealer, where a computer reprogramming was performed; however, the failure persisted. Additionally, the contact stated that while driving 65 MPH and merging into the left lane, the automatic emergency braking system erroneously engaged and the vehicle hard-braked, nearly causing a rear-end crash. The contact immediately depressed the accelerator pedal, and the vehicle accelerated as intended. The contact stated that the failure was intermittent and had occurred approximately six times. The vehicle was taken to the dealer, where the cause of the failure could not be determined; however, the dealer advised the contact that the failure might be related to the camera system. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 3,000.
Transmission began hesitating around 1800rpm with only 92,000 miles showing on the odometer. It feels like a flutter as the transmission shifts into the next gear. I have heard the 2016 year group has had transmission problems. Believe a recall is justified.
The vehicle experiences a transmission/drivetrain defect involving delayed gear engagement, hesitation, and apparent slipping. When accelerating from a complete stop (especially onto an incline) the engine RPM increases but the vehicle fails to accelerate as expected. The vehicle jerks and shakes violently and is unable to gain speed. This issue is intermittent but highly repeatable and occurs almost every time when there is a slope immediately after a stop sign. It results in loss of acceleration, violent shaking, and inability to maintain or build speed, creating a serious safety risk in traffic. It first happened around 1 year (early 2026) after the new car purchase (Nov 2025). There are no warning lights or messages. The dealer claimed they were unable to reproduce the issue during a brief test drive without me present and incorrectly attributed it to a bulletin without performing a detailed diagnosis or repair or looking at the video we recorded on the issue. The issue persists and affects safe operation of the vehicle. No inspection has been done by police or insurance. In one instance, this occurred while other vehicles were approaching from behind, creating a dangerous situation where I could not accelerate to match traffic flow. This resulted in a high risk of being rear-ended due to the unexpected loss of acceleration. I am aware of other consumer reports describing similar transmission-related symptoms such as slipping, hard shifting, and hesitation in this model. Some complaints describe transmission issues occurring at low mileage without warning lights.
My car will be in park and it always says shift to park when its in park , this is very unsafe. Also when I change gears from park to drive or reverse the RPM revs up gets stuck then drops quick causing the hesitation and then kicks in.
The contact owns a 2024 GMC Acadia. The contact stated that while driving at various speeds, the vehicle hesitated while coming to a stop while depressing the brake pedal. No warning light was illuminated. In addition, the contact had to apply extra pressure on the brake pedal to stop the vehicle. The contact stated that there was an abnormal squeaking sound coming from the vehicle. The vehicle was taken to a local dealer, where it was diagnosed; however, no cause for the failure was found. The vehicle was repaired; however, the failure reoccurred. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 7,000.
The engine is not shifting properly, and the vehicle loses speed while driving and hesitates to accelerate. At time, it feels as though the car is not moving at all. This issue has occurred on multiple occasions, affecting both me and my family, and has forced us to pull over because the vehicle could barely move forward. This happed once on the highway and almost caused an accident. Additionally, the check engine light remains on at all times.
Unknown, The vehicle will begin to jerk or shake when it gets up to about 30 - 40mph then levels out. Sometimes it will repeat the jerking when traveling at speed of 50 - 60mph for a few seconds then levels out. Sometimes the vehicle hesitate on take off from a stopped position.
Transmission failure - needed to replace the transmission Experienced rough shifting, slipping, or hesitation and then transmission failed while driving almost causing a multicar accident. This is a widely known issue for my vehicle year. GMC would not assist with any coverage of the repairs. This issue needs to be a recall.
Related recalls
Power train: automatic transmission
- What is wrong
- General Motors, LLC (GM) is recalling certain 2023 Cadillac XT6, GMC Acadia, Chevrolet Blazer, Traverse, and 2022-2023 Cadillac XT5 vehicles. The transmission may have been built with an incorrect sun gear, which can result in the driver-side half-shaft disengaging from the transmission.
- Risk
- A half-shaft disengaging from the transmission can result in a loss of drive power or vehicle rollaway when the vehicle is placed in park. Either of these scenarios can increase the risk of a crash.
- Remedy
- Dealers will replace the sun gears, free of charge. Owner notification letters were mailed on July 27, 2023. The remedy is expected to become available August 31, 2023. Owners may contact Cadillac customer service at 1‑800‑458‑8006, Chevrolet customer service at 1‑800‑222‑1020, or GMC customer service at 1‑800‑462‑8782. GMC's number for this recall is N222389310.
Recall number 23V172000 · Recall details
Power train: driveline: driveshaft
- What is wrong
- General Motors, LLC (GM) is recalling certain 2023 Cadillac XT5 and GMC Acadia vehicles. The right-front half-shaft assemblies may be improperly connected to the transmission, causing them to separate.
- Risk
- Separation between the half-shaft and transmission can result in a loss of drive power or vehicle rollaway when the vehicle is placed in park. Either of these scenarios can increase the risk of a crash.
- Remedy
- Dealers will replace the right-front half-shaft assemblies, free of charge. Owner notification letters were mailed February 17, 2023. Owners may contact Cadillac customer service at 1‑800‑458‑8006 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N222393410.
Recall number 23V043000 · Recall details
Power train: automatic transmission
- What is wrong
- General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
- Risk
- Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire.
- Remedy
- GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1‑888‑988‑7267, Buick Customer service at 1‑866‑608‑8080, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is N202313440.
Recall number 20V668000 · Recall details
Power train: driveline: driveshaft
- What is wrong
- 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.
- Remedy
- GM will notify owners, and dealers will replace the right front intermediate drive shaft assembly, free of charge. The recall began August 25, 2017. Owners may contact GMC customer service at 1‑800‑462‑8782 or Chevrolet customer service at 1‑800‑222‑1020. GM's number for this recall is 17329.
Recall number 17V516000 · Recall details
Power train: automatic transmission
- What is wrong
- General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, LaCrosse, Verano, and Enclave, and Chevrolet Impala, Malibu, Cruze, and Traverse, and GMC Acadia vehicles equipped with automatic transmissions. In the affected vehicles, the transmission shift cable adjuster may disengage from the transmission shift lever. As such, these vehicles do not conform to Federal Motor Vehicle Safety Standard (FMVSS) number 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect." They also fail to conform to FMVSS number 114, "Theft Protection and Rollaway Prevention."
- Risk
- If a vehicle's shift cable disengages from the transmission shift lever, a driver may be unable to shift gear positions and the indicated shift position may not represent the gear position the vehicle is in. Should a disengagement occur while the vehicle is being driven, when the driver goes to stop and park the vehicle, the driver may be able to shift the lever to the "PARK" position, but the vehicle transmission may not be in the "PARK" gear position. If the vehicle is not in the "PARK" position there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
- Remedy
- General Motors will notify owners, and dealers will inspect and replace any affected transmission shift cable adjusters, free of charge. The recall began on April 10, 2014. Chevrolet owners may contact General Motors at 1‑800‑222‑1020, Buick owners at 1‑800‑521‑7300, and GMC owners at 1‑800‑462‑8782. General Motors' number associated with this recall is 14048.
Recall number 14V092000 · Recall details
Power train: automatic transmission: lever and linkage: column shift
- What is wrong
- General motors is recalling 276,729 my 2009 buick enclave, chevrolet cobalt, hhr, malibu, traverse, gmc acadia, pontiac g5, g6 and saturn aura and outlook passenger vehicles. These vehicles fail to comply with federal motor vehicles safety standard 102, "transmission shift position sequence, starter interlock, and transmission braking effect", and fmvss 114, "theft protection and rollaway prevention". On some of these vehicles, the transmission shift cable adjustment clip may not be fully engaged. If the clip is not fully engaged, the shift lever and the actual position of the transmission gear may not match. With this condition, the drive could move the shifter to "park" and remove the ignition key, but the transmission gear may not be in "park".
- Risk
- The driver may not be able to restart the vehicle and the vehicle could roll away after the driver has exited the vehicle, resulting in a possible crash without prior warning.
- Remedy
- Dealers will inspect and ensure that the shift cable adjustment clip is fully engaged. In the event that the clip does not engage, the shift cable will be replaced free of charge. The recall is expected to begin on or before march 24, 2009. Owners may contact buick at 1‑866‑608‑8080, chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, pontiac at 1‑800‑620‑7668 and saturn at 1‑800‑972‑8876 or at www.gmownercenter.com.
Recall number 09V073000 · Recall details
Questions about the GMC Acadia hesitation
Which GMC Acadia years have hesitation when accelerating problems?
The model years with the most reports are 2017 (10 complaints), 2007 (9 complaints) and 2008 (6 complaints).
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