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 ...

Lower Anchors and Tethers for Children (LATCH System)
The LATCH system holds a child restraint during driving or in a crash. This system is designed to make installation of a child restraint easier. The LATCH system uses anchors in the vehicle and at ...

Lumbar Adjustment
Eight-Way Power Seat Shown, Four-Way Similar A. Lumbar Switch If available, press and hold the front or rear of the switch (A) to increase or decrease lumbar support. Release the switch when the ...