See also:

Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail GMC, the letter should be addressed to: United States GMC Customer Assistance ...

Interior Care
To prevent dirt particle abrasions, regularly clean the vehicle's interior. Immediately remove any soils. Note that newspapers or dark garments that can transfer color to home furnishings can also pe ...

Returning the Seat to the Seating Position
To return the seatback to the seating position: 1. From the rear of the vehicle, raise the seatback to the upright position using the pullstrap on the back of the third row seat, or lift the seatback ...