2018 GMC Terrain GMC Terrain 2018

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2018 GMC Terrain repairs by problem area

Engine (33%)

Transmission and Drivetrain (22%)

Brakes and Traction Control (0%)

Suspension and Steering (0%)

Electrical and Air Conditioning (44%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (0%)

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Chart based on 9 repairs.
See TSBs and recalls for the 2018 GMC Terrain.

2018 GMC Terrain repair cost distribution

$2500+ (0%)

$1000 - $2499 (0%)

$500 - $999 (0%)

$100 - $499 (0%)

< $100 (100%)

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Chart based on 6 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2018 GMC Terrain 4dr SUV

turbocharged 252hp 2.0L I4 9-speed shiftable automatic 4WD

GMC Terrain in Ontario, Canada
Oct 2017 - Jan 2019
Jan 2018

620 mi
Rear Differential Clutch control Module 
Jun 2018

1860 mi
Recall - airbag Sensor 
GMC Terrain in Michigan, United States
Mar 2018 - Jun 2020
Apr 2020

25000 mi
Stereo software had a glitch where it would not tune properly. 
GMC Terrain in Ohio, United States
Feb 2019 - Jun 2021
Mar 2020

4320 mi
Took vehicle in for 1st oil change since purchase. Also had issue with the auto START/STOP not working and Low Battery Warning messages at start up. Dealer also did recall for software update.. Link:https://www.repairprocedures.com/bul...1/5508268.html Attempted to start car in AM battery was completely dead. Called dealer and reported it and was asked to return car for servicing. Contacted AAA and had car jump started. Drove car to dealer and returned home in a loaner car. Dealer called in late afternoon and said car was ready. The 'new' battery that was installed on 03/03/20 was replaced again and electrical system was checked and found to be within specs per the service rep. The invoice noted that the failed 48 AGM battery had 0 CCA. 

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2018 GMC Terrain 4dr SUV

turbocharged 170hp 1.5L I4 9-speed shiftable automatic FWD

GMC Terrain in Pennsylvania, United States
May 2018 - Jun 2021
Jun 2018

1000 mi
Continual check engine lights; erratic auto-stop activity. Unable to shift into reverse. 

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2018 GMC Terrain 4dr SUV

turbocharged 137hp 1.6L I4 Diesel 6-speed shiftable automatic 4WD

GMC Terrain in Michigan, United States
Jan 2018 - Oct 2021
Oct 2019

28000 mi
Diagnosis of CEL. In need of EGR heat exchanger replacement. Parts currently on back order. CLE EGR cooling system performance - new software download to attempt to correct. 
Jan 2020

24000 mi
Exhaust Gas Recirculation (EGR) heat exchanger replacement. Original not able to maintain temp in required band causing check engine light (CEL). Issue did not result in drivability issues only CEL. 

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2018 GMC Terrain Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2018 GMC Terrain problems occur, check out our car reliability stats.