Problems · by component
2010 GMC Terrain electrical system problems
48 owner complaints to NHTSA about the 2010 GMC Terrain cite electrical system, 16% of all 295 complaints for this model year.
Complaints
48
16% of all complaints
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
3
Reported by owners
What owners say about the electrical system
Verbatim from NHTSA complaints, newest first
“The contact owns a 2010 GMC Terrain. The contact stated that while operating the vehicle, the center console display intermittently malfunctioned and became inoperable. During the failure, the HVAC system was no longer blowing hot air, and the front windshield could not be defrosted, creating a visibility hazard for the driver. Additionally, the radio had become inoperable, and the audible clicking from the turn signal was muted. The cause of the failures was not yet determined. The manufacturer was notified of the failures and informed the contact that the VIN was not included in NHTSA Campaign Number: 09V489000 (VISIBILITY). The contact stated that the vehicle had experienced the failure listed in the recall. The local dealer was not contacted. The failure mileage was 114,000.”
“Reduce spreed unknown if related to fuel pressure regulator since repaired twice told could be to service bulletin. Warning lights keeps appearing while driving at a speed of 40 to 50 mph.”
“Twice had to have wiring repaired because animals ate the wiring. Both were caused by GM using soy based insulation on wiring that made it a delicacy to the animals and caused them to eat through two wiring harnesses, one of which GM no longer makes. The other complaint is the timing belt has stretched and is now in need of replacement at a cost of $4500 to $5000.”
“The contact owns a 2010 GMC Terrain. The contact stated that upon attempting to start the vehicle, the vehicle failed to start as intended; however, the contact was able to jumpstart the vehicle. After a visual inspection of the engine compartment, the contact observed excessive corrosion on and around the battery terminals and the presence of battery acid coming from the battery casing. The contact stated that while driving at an undisclosed speed, several unknown electronics and instrument panel gauges failed to work properly. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 58,000. The VIN was not available.”
“My defrost system doesn't work. As I drive down the road my windshield fogs up andni can't get it to un fog at all or fast enough. Almost caused me to have an accident before Christmas”
“The defroster/ radio control/ heating area stopped working. Upon visiting a mechanic was told they never seen this or heard of this happening before and quoted me over $1,000.00 dollars to fix stating that due to Federal Law they have to give an estimate but this problem not being in their system they came up with an estimate based on parts and labor. Upon searching online I found a recall for this issue dating back to 2009 recall number was 09V489000 but was never informed about this and while looking up my car it’s not listed but being a safety issue should still be current which it is not.”
Showing 6 of 48 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.