Ordering Publications
Service Manuals
Service manuals contain diagnostic and repair information for the engine, transmission, axle, suspension, brakes, electrical system, steering system, body, and more.
Customer Literature
Owner's manuals are written specifically for owners and are intended to provide basic operating information about the vehicle. The owner's manual includes a maintenance schedule for all models.
Customer literature publications are available for purchase, including the owner's manual, warranty guide, infotainment manuals, and portfolios. Portfolios include the owner's manual, warranty booklet, infotainment system manual if applicable, and a zippered bag or case.
Current and Past Models
Service instructions and customer literature are available for many current and past model year GM vehicles.
To order, call 1-800-551-4123, Monday through Friday, 8:00 a.m. to 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
NOTICE: Customer Assistance
47911 Halyard Drive
Plymouth, Michigan 48170
Make checks payable in U.S. funds.
Test yourself
A quick GMC Terrain quiz: every answer comes with an explanation and a link to the manual page.