2015 GMC Terrain Transmission & Power Train Problems
NHTSA component category: POWER TRAIN · 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 power train ranks on this vehicle
Share of the 295 complaints citing each category; one complaint can cite several. Full breakdown on the 2015 GMC Terrain overview page.
What owners report
“THE CONTACT OWNS A 2015 GMC TERRAIN. WHILE DRIVING 30 MPH, THE VEHICLE BEGAN TO HESITATE AND THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. ALSO, WHEN…”NHTSA complaint 11253285 — filed 09/04/2019
“VEHICLE PURCHASE FROM COULTER CADILLAC TEMPE AZ - 9/1/2018. THIS PROBLEM HAS OCCURED 3 TIMES. DEALER ACKNOWLEDGES "WE PUT YOU IN A BAD CAR". PROBLEM…”NHTSA complaint 11234154 — filed 07/23/2019
“THE ENGINE LIGHT CAME ON AFTER AN 3 DAYS AFTER OIL CHANGE AND BEGIN TO CUT OFF WHEN I WOULD ACCELERATE. I TOOK IT TO…”NHTSA complaint 11161957 — filed 12/17/2018
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Power Train complaints by year filed
Frequently asked questions
Does the 2015 GMC Terrain have transmission & power train problems?
Power Train is the #5 most-reported problem area on the 2015 GMC Terrain: 21 of 295 complaints on file (7.1%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2015 GMC Terrain have in total?
295 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 9 involved a crash, 1 involved a fire, 6 reported injuries, and none reported deaths.
What does NHTSA's power train category include?
NHTSA groups complaints about the transmission (automatic or manual), driveline, axles, transfer case and related parts under a single component category called POWER TRAIN. This page reports that category as NHTSA defines it.
