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Electrical systemPart report

2011 GMC Terrain Electrical system Problems

Complaints
29about this part
Share
8%of 386 total for the year
Median mileage
89,500miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 29 complaints about the electrical system of the 2011 GMC Terrain, 8% of the 386 complaints for this model year. Where a mileage was given, the median is 89,500 miles. 1 a fire, according to the filers. 1 recall campaign on record is filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Car randomly shuts off while driving it doesn't matter if I am on the highway or driving through the city, also engine power reduced mode. Throws random codes even after codes have been serviced. We have been dealing with this issue for close to 2 years with no resolve. After further investigation we have found there are multiple complaints of this exact issue.”

NHTSA complaint #11397978, filed 2021-02, 135,000 miles

“My car shut off once while I was in idle at a red light and second time when I was backing up into a parking spot some one who was driving opposite me could have hit me when the car abruptly stopped. Luckily they were going very slow and stopped when my car stopped. The engine shuts off as well as the lights on the dash but when you put it in park and start it up again the engine starts back up and no check engine lights appear. Can you please look into this?”

NHTSA complaint #11244381, filed 2019-08, 153,000 miles

“After dealing with the repairs on excessive oil consumption issues, my warranty is now up and I am dealing with my car completely dying at a moments notice. This is not the battery as we've had both aaa and our mechanic test the battery several times - the issue, according to our mechanic, is computer failure. Essentially, I spent $400 four weeks ago for my mechanic to tell me that nothing was wrong except the computer stopped communicating to the car to work , and my car has still died twice since...with the keys stuck in the ignition. …”

NHTSA complaint #11280563, filed 2019-11, 89,000 miles

“Our vehicle has experienced the rough idle and hard/stalled shifting since we bought it in 2011. It has been reviewed by the dealership and we were told a recent recall would fix the issue. It did not and these issues have continued. Recently, this issue happened again, followed by the check engine light turning on, followed by (a few hours later) the engine going into reduced engine mode and the entire vehicle shaking uncontrollably with thumping noises coming from the front of the vehicle. …”

NHTSA complaint #10556257, filed 2013-12, 50,000 miles

“Ignition completely turned off, I push button to turn on radio and I hear several tap, tap, tap, tap behind mid-dash radio-cd, a.c, heat control unit. I'm sure the tap, tap, tap, tap noise is door to air recirculation/no recirculation door that somehow activates unit actuator just by turning on radio! Unbelievable! Also, when I need to defrost windshield I turn temp knob to cold and the tap, tap, tap, tap noise happens! I do not turn on A/C compressor. Again, unbelievable!! This is a design defect for sure. I'm sure that to diagnose and repair the steering wheel, dash must be removed so tech,. …”

NHTSA complaint #11152537, filed 2018-11, 150,000 miles

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2026515%
2025431%
2024713%
2023717%
2022712%
2021719%
20202714%
20193921%
20183515%
201797%
201696%
20153110%
20143110%
2013226%
2012329%
2011298%
20104817%

Other parts of the 2011 GMC Terrain

Engine
178 complaints
Transmission and drivetrain
76 complaints
Fuel system
48 complaints
Visibility (wipers, defrost, mirrors)
35 complaints
Other or unknown
34 complaints
Air bags
25 complaints
Engine cooling
22 complaints
Electronic stability control
21 complaints
Vehicle speed control
18 complaints
Steering
15 complaints
Body and structure
11 complaints
Seats
10 complaints

← All problems reported for the 2011 GMC Terrain

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology