GM Service Manual Online
For 1990-2009 cars only

The following three reversible motors operate the power seat:

    • The first motor raises or lowers the front of the seat.
    • The second motor raises or lowers the rear of the seat.
    • The third motor moves the seat forward or back.

Moving the front tilt switch to the UP position applies the voltage to the front tilt seat motor. The voltage applies through CKT 286 (DK GRN). The motor grounds through the front tilt switch to ground G110. The front of the seat raises. Moving the front tilt switch to the DOWN position reverses the polarity. The front of the seat lowers. The rear tilt seat motor operates in the same manner through the rear tilt switch.

Moving the forward/rearward UP and DOWN switches operates the following motors:

    • The front tilt seat
    • The rear tilt seat

Moving the forward/rearward UP and DOWN switch to the front or the back operates the forward/rearward motors. The seat moves forward or backward.