2011 GMC Acadia Problems

What owners report

Owners of this model year most often write about the power steering — a whine or leak that turns into hard steering, occasionally at parking speeds or while slowing. Engine problems (timing chain wear, oil consumption, engine replacement) and melted headlamp assemblies are the other recurring themes. Many complaints come in between roughly 50,000 and 100,000 miles, and several describe the onset as gradual rather than sudden.

1. 1
   Steering

   Power steering whine, leak and loss of assist

   • 60 complaints (22%)
   • median 62,955 mi at 5.0 yrs old (50 state mileage)
   • owner-quoted repair $1,500 (median of 17 quotes)
   • filed 2013–2022

   Owners describe a whining noise that appears first, followed by steering that becomes heavy or binds, most noticeably at low engine speed, while parking, or when slowing down. Dealers commonly diagnosed a failing power steering pump and rack and pinion assembly, sometimes quoting fluid leaks at the rack; some repairs were repeated when the noise or stiffness returned. Several complaints note that no warning light came on and that they had to raise engine speed to regain assistance. Reports span roughly 28,000 to 174,000 miles, with many in the 40,000-100,000 range; a few owners mention it happening in wet conditions.

   1 related service bulletin

   What to check: Listen for a whine from the front of the engine when turning the wheel at idle, and check the power steering fluid level and the rack for leaks. Ask whether the pump or rack has been replaced and with which fluid.

   2 excerpts from owner complaints in NHTSA records

   “The power steering stops working when trying to park or moving at a slow speed. I am in good shape and it takes me all my power with two hands to turn the steering wheel. There is no warning it catches you off guard and multiple times almost hit cars in spots next to where I park. We also have had the air conditioning fixed twice since we've bought it and still doesn't blow as cold as it should. The car has 78,000 miles.”

   NHTSA complaint #11014096, filed 2017-08, 32,000 miles

   “Steering wheel completely locked up during a turn a couple of weeks ago. Then last week I couldn't shift into reverse to get out of driveway. Had it towed to dealer. 1500.00 later I have new shifter and some sort of new gears in steering wheel. Looked it up and there is a class action law suit with millions of people having the same problem, yet still not covered under a recall. My vehicle only has 48000 miles on it this should not have happened if there weren't some sort of defect in manufacture.”

   NHTSA complaint #10820080, filed 2016-01, 48,000 miles
2. 2
   Exterior lighting

   Headlight and running light housings melting

   • 32 complaints (12%)
   • median 60,000 mi at 4.5 yrs old (31 state mileage)
   • 6 mention a crash, fire or injury
   • owner-quoted repair $1,530 (median of 6 quotes)
   • filed 2013–2020

   Owners report daytime running lights or low beams that stop working, and on inspection the bulb socket or housing is found melted, corroded or cracked. According to the complaints, dealers replaced the whole headlamp assembly, in some cases on both sides, and the problem came back on the opposite lamp later. Several owners were told this was a pattern the dealer had seen on other vehicles of the same model. Usually reported between about 30,000 and 150,000 miles, appearing as a failed bulb before the melted housing is found.

   What to check: With the lights on, look inside both headlamp housings for discoloration, cracking or a scorched socket, and confirm both daytime running lights work.

   2 excerpts from owner complaints in NHTSA records

   “I noticed headlight wasn't working and went to auto parts store to replace bulb. Attendant looked at it and said plastic assembly holding headlight bulb was melted and discolored as if the bulb was overheated.. We worried that it could have caught on fire so took it to sandoval Gmc where we purchased the vehicle new. Left it to have replaced and they called and said the other headlamp assembly has melted as well. Both would need to be replaced to insure no danger of fire. …”

   NHTSA complaint #10648388, filed 2014-10, 71,039 miles

   “We bought this car in feb. 2016 used with only 66,000 miles. About 2 months after we purchased it, the passenger low beam light went out. I purchased a bulb to replace, but it proved to be difficult. I had 3 open recalls so I brought car in to dealer. The night before bringing it in, driver low beam light went out. I asked dealer to replace bulbs while vehicle was there. Received a phone call from the dealer that the bulbs could not be replaced because headlight housing was melted!!!! …”

   NHTSA complaint #10874887, filed 2016-06, 69,520 miles
3. 3
   Engine

   Timing chain wear, noise and engine replacement

   • 35 complaints (13%)
   • median 80,318 mi at 6.5 yrs old (28 state mileage)
   • owner-quoted repair $4,000 (median of 5 quotes)
   • filed 2013–2024

   Complaints describe a loud ticking or rattling from the engine, stalling or a no-start, and a shop diagnosis of a stretched or failed timing chain, damaged cylinder head or a needed engine replacement. Some owners report oil consumption or oil reaching the spark plug tubes and timing chain area. Repair estimates in the complaints range from several thousand dollars upward, and some vehicles were not repaired. Mostly reported from about 51,000 to 163,000 miles, with several around 85,000-100,000 miles.

   4 related service bulletins

   What to check: Ask for service records showing regular oil changes and check the oil level and condition; a cold start listen for chain rattle or ticking is worth doing before purchase.

   2 excerpts from owner complaints in NHTSA records

   “At 86,000 miles, the engine needed to be replaced. Despite our regular maintenance and oil changes, the vehicle began to make a loud ticking sound. We immediately pulled into the nearest auto shop. We had two mechanics (had car towed for second opinion) say that the engine needed to be replaced.”

   NHTSA complaint #11351176, filed 2020-08, 86,000 miles

   “I was driving my 2011 Gmc Acadia and all of a sudden the car started to decelerate. I pulled over and turn the car off and then the car would not start again. I had it towed to the dealership. The dealership is saying there is an issue with the timing chain. The dealership said that the timing chain failed. Upon doing research, I see that this is a common issue with Gmc models, especially the Acadia model. The dealership is saying that the repair is going to cost me $7500. …”

   NHTSA complaint #11030021, filed 2017-09, 100,000 miles
4. 4
   Electronic stability control

   Stabilitrak, traction control and reduced power messages

   • 15 complaints (6%)
   • median 71,733 mi at 5.8 yrs old (15 state mileage)
   • filed 2014–2020

   Owners describe a sequence of dashboard messages — traction control off, service Stabilitrak, sometimes reduced engine power — followed by the vehicle refusing to accelerate above a low speed until it is shut off and restarted. Complaints also mention doors locking and unlocking, gauges sweeping, and a battery that drains and cannot be jump-started. Shops variously diagnosed a control module or electrical fault. Typically reported between about 50,000 and 100,000 miles, often at highway speed or shortly after startup.

   3 related service bulletins

   What to check: Ask whether any modules were reprogrammed and whether the battery has been tested; check for stored codes and any history of warning lights on the dash.

   2 excerpts from owner complaints in NHTSA records

   “I was dropping my son off to school, doing about 20 MPH when my car dash started blinking off and on saying traction control is off; check traction control; and then the car just stalled in the middle of a busy road with my son in the back seat. I found out that my computer system had malfunction and that I would need a new on installed.”

   NHTSA complaint #10683566, filed 2015-02, 81,000 miles

   “Stabilitrak always reports off and brake warning always displays on dashboard, while on or running. Had it looked at by 4 mechanics. Breaks are fine. Engine wont start after everytime I pump gas. I have to pump accelerator sevral times for engine to start. Had it looked at again. Problem is ongoing. Also, slowed down on one occasion while driving on the hwy. Had to pull over since accelerator would not function. After 30mins or so. Was able to restart.”

   NHTSA complaint #11319664, filed 2020-03, 120,000 miles
5. 5
   Transmission and drivetrain

   Transmission shudders or fails to move

   • 21 complaints (8%)
   • median 71,764 mi at 3.8 yrs old (16 state mileage)
   • 4 mention a crash, fire or injury
   • filed 2010–2025

   Owners report shuddering or vibration at steady highway speeds that stops when the throttle is released, hesitation when accelerating from a stop, and in some cases a vehicle that would not move after the transmission was diagnosed as failed. Some complaints mention the shifter not going into Park or the vehicle rolling after being shifted, and one owner was told a delay in throttle response was normal. Mostly between about 48,000 and 145,000 miles, with shuddering noted at 40-60 mph in all weather.

   3 related service bulletins

   What to check: Test drive at steady 45-60 mph and feel for vibration or shudder, and confirm the shifter engages Park firmly and the key releases.

   2 excerpts from owner complaints in NHTSA records

   “Vehicle came out of park sitting in driveway while being cleaned out. The key was not in the ignition; however the gear shift was shifted into park as someone reached over across the seat. Passenger side doors were open and as the vehicle rolled , the doors hit my pouch causing damage to the front and rear passenger doors. My children had to jump out of the way to avoid being ran over. There is a serious defect on 2011 Acadia and the results could have been deadly. I need for Gmc to fix this problem. …”

   NHTSA complaint #10853728, filed 2016-04, 71,796 miles

   “The car shutters intermediately when driven at higher posted speed limits. From about 40/45 miles per hour up to about 60 miles an hour. The vibration shakes the entire vehicle. Letting off the gas or acceleration will stop it, but go back to a steady speed, and it returns. Have kept up with service and the vehicle is in tremendous condition, but this condition is present in all weather and temperatures and seems to not have a cure. Have replaced all possible causes, including torque converter and possible sensors. Has not gone away. …”

   NHTSA complaint #11140212, filed 2018-10, 274,000 miles

Buying note. Check the power steering for whine or leaks and inspect both headlamp housings before buying, since these are the most frequently reported items. Ask for maintenance records covering oil changes and any transmission or timing chain work, and have warning lights and stored codes checked on a test drive.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.