Starting and Operating

See also:

Safety Belts
This section of the manual describes how to use safety belts properly. It also describes some things not to do with safety belts. WARNING Do not let anyone ride where a safety belt cannot be worn pr ...

Lumbar Adjustment
Power Lumbar 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 s ...

2011 GMC Sierra 2500HD Review
The "professional grade" brand unveiled the 2011 GMC Sierra Heavy Duty lineup at the 2010 NTEA Work Truck Show. Most of the technical specifications of GM's HD pickups are identical, but ...