definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,619 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 GMC Terrain fuel system problems

fuel system problem

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2012 GMC Terrain Owner Comments

problem #6

Apr 122016


  • 49,500 miles


At low idle or when backing up and accelerating vehicle the engine stalls. This typically occurs after driving car for 10-15 minutes. Engine light appears. It will continue to stall unless holding down brake & accelerator at same time. Stops stalling when speed increases, but stalls on low speeds & backing up continually. Code indicates camshaft adjuster sensor. First sensor replaced. Problem occurred again immediately after leaving garage. Second sensor replaced. Problem occurred once again! mechanic thinks it could be ground wiring issue is burning up the camshaft sensors. The car is not safe to drive.

- Beebe, AR, USA

problem #5

Aug 282014


  • 50,300 miles
Car die (stall) at idol after warmed up drive it 10 miles stop at stop sign it die restart die again may do that 3-4 times before it will take gas and run does this intermeditly run fine for half a day stop run in store come out restart and it die (no chugging just die) auto parts store said it was a crankshaft sensor when they checked what had the check engine light on (note check engine light not come on each time it stalls)

- Muskogee, OK, USA

problem #4

Aug 092013

Terrain 4-cyl

  • 30,879 miles
After stopping at mailbox the low fuel illuminated, the fuel gauge indicated empty. The tank was half full prior to the 12 mile trip home from town. Not sure when the problem occurred, because it might have taken a few minutes to pump out 8 or 9 gallons of gas, however it was on this12 mile trip home. 6 miles of highway at 55 mph and 5 miles of paved county road at 30 mph and 1 mile of gravel road at 20 mph. After the low fuel indication the engine was stopped, fuel was added from a container, and when the engine was started the fuel streamed out on the ground. The vehicle was towed to a local repair facility, because it was closer than the dealer. Gas line and clamp were replaced. The mechanic indicated the plastic gas line and plastic clamp were hanging low, and no protective cove over it.

- Eureka Springs, AR, USA

problem #3

Apr 252013

Terrain 6-cyl

  • 5,035 miles


I started out driving on highway road at approximately 5:45pm traffic was moderate, my speed was about 30-35 mph. All of a sudden I heard a clunk and then alarm ding from the dash as well as message "service stabiltrak" then "reduced engine power". I was unable to go any faster than 25mph. I drove in this mode for about 2 miles in traffic, when reaching open highway (no traffic) the vehicle would not shift by itself. I had to accelerate then let off the gas, tap pedal then the vehicle would shift. I was able to do this multiple times until reaching about 45mph. I pulled off into a neighborhood, shut vehicle off to see if this would reset something, it did not. The vehicle was in this state when I arrived at the dealership service department at approximately 6:05pm. Dealership logged following on service request: 5043 found code P228C ran diag could not duplicate problem fuel psi at spec raises to spec test drove on highway did not duplicate condition found no bull on condition test drive numerous time, could not duplicate concern. Miles out 5067.

- Columbus, OH, USA

problem #2

Nov 082012


  • 12,000 miles
The contact owns a 2012 GMC Terrain. The contact stated that he was driving approximately 60-70 mph when he heard a loud noise as the vehicle stalled. The contact was able to pull off the road. After inspecting the vehicle, he found that the fuel line was fractured and all of the gasoline spilled out from the vehicle and onto the highway. The police were contacted and a report was filed. The vehicle was towed to the dealer for diagnosis where the contact was advised that the fuel line needed to be replaced. The fuel line was replaced. The manufacturer was not contacted. The failure and current mileages were approximately 12,000.

- Collinsville, IL, USA

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problem #1

Oct 192012


  • 18,000 miles
The contact owns a 2012 GMC Terrain. The contact stated that while driving 65 mph, the contact drove over a piece of a tire in the road. The tire struck the fuel line and caused the fuel line to become detached. As a result, gasoline fuel began to spill over the highway. The vehicle was stopped and towed to a dealer for diagnosis and the fuel line was replaced. The dealer informed the contact that there was nothing to protect the fuel line from subsequent contact with road debris. The vehicle was repaired. The failure and current mileage was 18,000.

- Richmond, TX, USA

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