2012 GMC Terrain Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/14/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How electrical system ranks on this vehicle
Share of the 364 complaints citing each category; one complaint can cite several. Full breakdown on the 2012 GMC Terrain overview page.
What owners report
“WHILE DRIVING THE VEHICLE, I EXPERIENCED STRONG KNOCKING VIBRATIONS AND SOUNDS SEEMINGLY COMING THROUGH THE FLOORBOARD. AS I CONTINUED DRIVING FOR ABOUT 5 MILES TRYING…”NHTSA complaint 11073770 — filed 02/20/2018
“THE LOW BEAM H11 BULB IS CAUSING THE (MALE/FEMALE PLUG IN) FOR THIS COMPONENT TO OVERHEAT CAUSING THE PLASTIC TO BECOME CHARRED, PARTIALLY MELTED AND…”NHTSA complaint 11043757 — filed 11/06/2017
“MY 2012 GMC TERRAIN HAS BEEN STALLING FOR A FEW DAYS NOW THE STABILLTRACK SENSOR WAS REPLACED THIS YEAR THE ENGINE LIGHT COMES ON AND…”NHTSA complaint 11000981 — filed 06/24/2017
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2012 GMC Terrain have electrical system problems?
Electrical System is the #5 most-reported problem area on the 2012 GMC Terrain: 30 of 364 complaints on file (8.2%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2012 GMC Terrain have in total?
364 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 17 involved a crash, 5 involved a fire, 19 reported injuries, and none reported deaths.
What does NHTSA's electrical system category include?
NHTSA assigns each complaint to standard component categories; this page reports the ELECTRICAL SYSTEM category exactly as NHTSA defines and records it.
