GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Does Not Move Forward/Rearward

Step

Action

Value(s)

Yes

No

DEFINITION: This diagnostic should only be used if the power seat operates in front and rear tilt but does not operate front to rear.

1

Has the Power Seats System Check been performed?

--

Go to Step 2

Go to Power Seats System Check

2
  1. Connect a fused jumper wire from the appropriate power seat adjuster switch connector cavity D for CKT 284 (DK GRN) to cavity C for CKT 150 (BLK).
  2. Connect a fused jumper wire from cavity E for CKT 285 (TAN) LH, or, CKT 296 (TAN) RH to cavity F for CKT 540 (ORN).

Did the motor move?

--

Go to Step 3

Go to Step 4

3

Replace the power seat adjuster switch.

Is the repair complete?

--

Go to Power Seats System Check

--

4
  1. Check for open(s) in CKT(s) 284 (LT GRN) and 285 (TAN) LH, or, CKT(s) 284 (LT GRN) and 296 (TAN) RH.
  2. Repair as necessary. Refer to Wiring Repairs in Wiring Systems.
  3. If no open(s) are found, replace the forward/rearward motor. Refer to Front Seat Adjuster Motor Replacement .

Is the repair complete?

--

Go to Power Seats System Check

--