Structure Problems of GMC Terrain

GMC Terrain owners have reported 10 problems related to structure (under the structure category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Terrain based on all problems reported for the Terrain.

1 Structure problem of the 2020 GMC Terrain

Failure Date: 10/10/2023

The contact owns a 2020 GMC Terrain. The contact stated that rain water had leaked from the sunroof drainage into the vehicle causing the floor carpets to become saturated with water and mold had developed inside the vehicle. The contact also discovered a pool of water inside the spare tire well. The vehicle was taken to the local dealer who replaced the sunroof motor and sunroof liner, unclogged the sunroof drainage assembly and replaced the carpets. The contact indicated that later the failure had reoccurred although the sunroof drainage assembly was consistently unclogged each time the vehicle was in for service. The contact had also experienced respiratory illness due to the mold present inside the vehicle. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 12,300.

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2 Structure problem of the 2022 GMC Terrain

Failure Date: 01/12/2022

The contact owns a 2022 GMC Terrain. The contact stated upon purchasing the vehicle and driving 60 mph to her residence for an hour, she smelled a strong glue, plastic and chemical-like odor. The contact stated that she parked the vehicle out in the sun and rolled the windows down; however, she could still smell a strong chemical odor inside the vehicle. The contact stated that the odor was significantly strong and caused her to have a sore throat while driving the vehicle. The contact stated that the odor smell was everywhere inside the vehicle; however, she had only been riding in the front driver's seat. The dealer was notified of the failure and advised the contact to take the vehicle to their location and they would spray ozone inside the cabin of the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 6.

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3 Structure problem of the 2011 GMC Terrain

Failure Date: 10/15/2011

The select the parts wont let me enter the description. When my vehicle is in cruise control the switch can be accidentally slightly touched and will shut off the cruise control causing the vehicle to immediately slow down without any warning to the vehicle behind me since the brake lights do not come on. I really feel that this is a safety related issue. GMC has a new cruise control switch for 2012 which is a push on and push off switch which alleviates this problem. I have contacted GMC and they informed that there is no plan to retrofit the 2011 Terrain with the new 2012 switch. Please advise! GMC knows that the toggle switch was faulty and replaced it with a push on push off switch. I just want my vehicle to be safe.

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4 Structure problem of the 2011 GMC Terrain

Failure Date: 06/17/2011

Tl- the contact owns a 2011 GMC Terrain. The contact stated that after going through a car wash, the headliner seal of the roof became wrinkled and sagging. The contact heard a rattling noise coming from the roof and the headliner clips fractured from the roof and the roof flopped downward. The vehicle was taken to the dealer for diagnostics where the technician applied adhesive and foam to the roof of the vehicle. The vehicle was not further repaired. The approximate failure mileage was 3,000. Kmj.

5 Structure problem of the 2011 GMC Terrain

Failure Date: 11/21/2010

On 11-21-10 my five year old son bumped his head on a hard surface that was not safely designed or padded properly. This happens when the brakes are applied strongly. Nothing was done by gm to correct this issue.

6 Structure problem of the 2010 GMC Terrain

Failure Date: 11/01/2010

In October of 2011, I hit a small stump on the front driver side of this vehicle. When I did this it sheared off the 3 bolts (left, center and right side) going across the crossbars and dropped both crossbars off the front of this vehicle. I didn't understand how it could have taken the crossbar on the passenger side until I saw the size of these bolts holding the crossbars on. It's a joke!!! 2010 GMC Terrain owners be careful because it doesn't take much to shear these bolts off and it will not be covered by your warranty.

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7 Structure problem of the 2010 GMC Terrain

Failure Date: 08/30/2010

The contact owns a 2010 GMC Terrain. While parked, the contact entered the vehicle and noticed the headliner was hanging down from in the rear. The vehicle was taken to an authorized dealer where it was repaired. The failure occurred twice after and the vehicle was taken back to the dealer to be repaired. The failure mileage was 32 and the current mileage was 3,900.

8 Structure problem of the 2010 GMC Terrain

Failure Date: 06/14/2010

Very intense reflection of dashboard image onto the lower third of windshield, causing a reduction in visibility. The reflection is very pronounced in bright sunlight, and is somewhat reduced on cloudy days, but is a constant problem in all daylight driving situations. Also I am having some intermittent reflection of chrome plated parts in the interior, causing visibility problems.

9 Structure problem of the 2010 GMC Terrain

Failure Date: 03/15/2010

My 2010 GMC Terrain was manufactured with a razor sharp edge along the inside entire roof rack slicing my arm open while washing may car.

10 Structure problem of the 2010 GMC Terrain

Failure Date: 03/10/2010

When the sun is high and shining through the windshield, it reflects off the chrome on the storage compartment latch, the heater/ac panel, the radio controls and the chrome around the gear shift lever and cup holders directly into the eyes of the driver. It blinds you, I almost had an accident the first time it happened to me.


Other Common Structure related problems of GMC Terrain


Safety Ratings of Terrain Cars
Fuel Economy of Terrain Vehicles
Terrain Service Bulletins
Terrain Safety Recalls
Terrain Defect Investigations