GMC Sierra
GMC Sierra

See also:
Loading the Vehicle for Off-Road Driving
WARNING
• Unsecured cargo on the load floor can be tossed about when driving over rough terrain. You or your passengers can be struck by flying objects. Secure the cargo properly.
• Keep cargo i ...
Shifting from Two-Wheel Drive High to Four-Wheel
Drive High
• Shifts between Two-Wheel Drive High and Four-Wheel Drive High can be made at any vehicle speed.
• Shift the transfer case lever in one continuous motion into either the Four-Wheel Drive High or ...
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 ...





