GM Service Manual Online
For 1990-2009 cars only

If your vehicle has bucket seats, you can adjust the seats several different ways.

Fore-and-Aft Adjustment

Caution: You can lose control of the vehicle if you try to adjust the seat while the vehicle is moving. The sudden movement could startle and confuse you, or make you push a pedal when you do not want to. Adjust the driver's seat only when the vehicle is not moving.


Object Number: 829580  Size: A2

The fore-and-aft adjustment lever is located underneath the front of the driver's seat.

To slide the seat forward or rearward, move the lever toward the outboard side of the seat. The seat will lock in at 1/2 inch (1.5 cm) increments.

Lumbar Adjustment

Your seats may have this feature.


Object Number: 810961  Size: A3

The lumbar adjustment knob is located on the seatback, on the inboard side of the driver's seat and on the outboard side of the passenger's seat.

For more support to your lower back, turn the lumbar adjustment knob clockwise. To decrease the amount of lumbar support, turn the knob counterclockwise.

Seatback Adjustment

Your vehicle will have one of the following seatback reclining mechanisms.

Caution: You can lose control of the vehicle if you try to adjust a manual driver's seat while the vehicle is moving. The sudden movement could startle and confuse you, or make you push a pedal when you do not want to. Adjust the driver's seat only when the vehicle is not moving.

Caution: If either seatback is not locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always push and pull on the seatbacks to be sure they are locked.


Object Number: 829577  Size: A3

If your vehicle has this knob, it is located on the inboard side of the driver's seat cushion and the outboard side of the passenger's seat cushion.

To tilt the seatback rearward, turn the knob toward the rear of the vehicle. To tilt the seat forward turn the knob toward the front of the vehicle.


Object Number: 829569  Size: B2

If your vehicle has this lever, it is located on the outboard side of the driver's and passenger's seat cushions.

To recline the seatback, do the following:

  1. Lift the recline lever.
  2. Move the seatback to the desired position, then release the lever to lock the seatback in place.
  3. Push and pull on the seatback to make sure it is locked.

To return the seatback to an upright position, do the following:

  1. Lift the lever fully without applying pressure to the seatback and the seatback will return to the upright position.
  2. Push and pull on the seatback to make sure it is locked.

Object Number: 819523  Size: B4

Caution: Sitting in a reclined position when your vehicle is in motion can be dangerous. Even if you buckle up, your safety belts cannot do their job when you are reclined like this.

The shoulder belt cannot do its job. In a crash, you could go into it, receiving neck or other injuries.

The lap belt cannot do its job either. In a crash the belt could go up over your abdomen. The belt forces would be there, not at your pelvic bones. This could cause serious internal injuries.

For proper protection when the vehicle is in motion, have the seatback upright. Then sit well back in the seat and wear your safety belt properly.

Do not have a seatback reclined if your vehicle is moving.