GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have a low-back or high-back air suspension seat. There are two ways you can adjust the seat.

Height Adjustment


Object Number: 829575  Size: A3

The suspension seat height adjustment lever is located on the front inboard side of the seat.

To adjust the height of the air suspension seat, pull the lever up to inflate. Push the lever down to deflate.

The seat cushion can also be raised or lowered.


Object Number: 808919  Size: A3

The seat cushion height adjustment handle is located underneath the front of the seat.

To adjust the height of the cushion, lift the handle up and pull it forward. You can choose between two settings.

Chugger-Snubber Lock-Out Feature


Object Number: 829581  Size: A3

If your vehicle has this feature, the handle is located on the outboard side of the driver's and passenger's seats.

Move the handle down to reduce any backslap experienced while in tractor/trailer operation or while operating a dump truck application.