GMC Terrain: Customer Information / Publication Ordering Information
Service Manuals
Service manuals have the diagnosis and repair information on the engine, transmission, axle, suspension, brakes, electrical system, steering system, body, etc.
Customer Literature
Owner’s manuals are written specifically for owners and are intended to provide basic operational information about the vehicle. The owner’s manual includes the Maintenance Schedule for all models.
Customer literature publications available for purchase include owner’s manuals, warranty manuals, infotainment manuals, and portfolios. Portfolios include an owner’s manual, warranty manual, infotainment manual, if applicable, and zip lock bag or pouch.
Current and Past Models
Service manuals and customer literature are available for many current and past model year GM vehicles.
To order, call 1-800-551-4123 Monday–Friday, 8:00 a.m.–6:00 p.m. eastern time
For credit card orders only (VISA, MasterCard, or Discover), see Helm, Inc. at: www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.
Collision Damage Repair
If the vehicle is involved in a
collision and it is damaged, have the
damage repaired by a qualified
technician using the proper
equipment and quality replacement
parts...
Radio Frequency Statement
This vehicle has systems that
operate on a radio frequency that
complies with Part 15/Part 18 of the
Federal Communications
Commission (FCC) rules and with
Innovation, Science and Economic
Development (ISED) Canada's
RSP-100 / license-exempt RSS's / ICES-001...
Other information:
GMC Terrain 2018-2026 Owners Manual: Fuel (LYX - 1.5L L4 Turbo Engine) and Fuel (LTG - 2.0L L4 Turbo Engine)
Fuel (LYX - 1.5L L4 Turbo Engine) Regular Unleaded Fuel Use only Regular 87 octane — (R+M)/2 — or higher unleaded gasoline in your vehicle. TOP TIER Detergent Gasoline is recommended. Do not use gasoline with an octane rating lower as it will result in reduced performance and lower fuel economy...
GMC Terrain 2018-2026 Owners Manual: Lockout Protection
If the ignition is on or in ACC/ ACCESSORY and the power door lock switch is pressed with the driver door open, all the doors will lock and only the driver door will unlock. If the vehicle is off and locking is requested while a door is open, when all doors are closed the vehicle will check for RKE transmitters inside...
