GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Astro - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Does Not Move Forward/Rearward

Step

Action

Value(s)

Yes

No

1

Did you perform the power seats system check?

--

Go to Step 2

Go to Power Seats System Check

2
  1. Disconnect the inoperative seat adjuster switch assembly from the connector.
  2. Use a fused jumper in order to connect CKT 296 or 295 (TAN) to CKT 750 (BLK) at the inoperative seat adjuster switch.
  3. Momentarily connect CKT 290 or 284 (LT GRN) to CKT 540 (ORN) with a fused jumper lead at the inoperative seat adjuster switch.

Does the motor move?

--

Go to Step 3

Go to Step 4

3

Replace the inoperative seat adjuster switch. Refer to Power Seat Switch Replacement .

Is the repair complete?

--

Go to Power Seats System Check

--

4
  1. Use a fused jumper in order to connect CKT 290 or 284 (LT GRN) to CKT 750 (BLK) at the inoperative seat adjuster switch.
  2. Momentarily connect CKT 296 or 295 (TAN) to CKT 540 (ORN) with a fused jumper lead at the inoperative seat adjuster switch.

Does the motor move?

--

Go to Step 3

Go to Step 5

5
  1. Disconnect the inoperative motor.
  2. Use an DMM in order to check for continuity in CKT 296 or 295 (TAN) and CKT 290 or 284 (LT GRN) between the inoperative seat adjuster switch and the forward/rearward seat motor.

Does continuity exist?

--

Go to Step 6

Go to Step 7

6

Replace the inoperative forward/rearward tilt seat motor.

Refer to Seat Replacement - Power with Adjuster in seats.

Is the repair complete?

--

Go to Power Seats System Check

--

7

Repair the open in CKT 296 or 295 (TAN) and/or CKT 290 or 284 (LT GRN) from the forward/rearward seat motor to the inoperative seat adjuster switch.

Is the repair complete?

--

Go to Power Seats System Check

--