GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Grand Prix 🢒 Body and Accessories 🢒 Seats 🢒 Power Seats System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Set the seat adjuster switch in any direction.

The seat will move in the direction the seat adjuster is set.

Power Seat Inoperative

2

Set the seat adjuster switch to the forward and then back positions.
    • The seat will move forward
    • The seat will move backward.

Power Seat Does Not Move Forward/Rearward

3

Set the front of the seat adjuster switch to the up and then down positions.
    • The front of the seat will tilt up.
    • The front of the seat will tilt down.

Power Seat Does Not Tilt Forward

4

Set the rear of the seat adjuster switch to the up and then down positions.
    • The rear of the seat will tilt up.
    • The rear of the seat will tilt up.

Rear Height Will Not Go Up or Down, Front Height Functions Operate Normally.

5

Set the middle of the seat adjuster switch to the up and and down positions.
    • The seat will raise.
    • The seat will lower.

Power Seat Adjuster Does Not Move Vertically

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.