GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Jimmy - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Does Not Tilt Rearward

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Seats System Check?

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Go to Step 2

Go to Power Seats System Check

2
  1. Ensure that the motor connector is connected.
  2. Using a J 39200 digital multimeter (DMM), backprobe the seat rear height motor connector terminal A to ground.
  3. Operate the power seat adjuster switch to the REAR UP position.

Is voltage present?

--

Go to Step 3

Go to Step 5

3
  1. Ensure that the motor connector remains connected.
  2. Using the J 39200 DMM, backprobe the seat rear height motor connector terminal B to ground.
  3. Operate the power seat adjuster switch to the REAR DOWN position.

Is voltage present?

--

Go to Step 4

Go to Step 6

4

Replace the seat rear height motor.

Is the repair complete?

--

Go to Power Seats System Check

--

5
  1. Access the power seat adjuster switch.
  2. Using the J 39200 DMM, backprobe the C1 terminal B to ground.
  3. Operate the power seat adjuster switch to the REAR UP position.

Is voltage present?

--

Go to Step 7

Go to Step 9

6
  1. Access the power seat adjuster switch.
  2. Using the J 39200 DMM, backprobe the C1 terminal C to ground.
  3. Operate the power seat adjuster switch to the REAR DOWN position.

Is voltage present?

--

Go to Step 8

Go to Step 9

7

Locate and repair the open or high resistance in CKT 282 (LH) or CKT 288 (RH) between the power seat adjuster switch and the seat rear height motor.

Is the repair complete?

--

Go to Power Seats System Check

--

8

Locate and repair the open or high resistance in CKT 283 (LH) or CKT 289 (RH) between the power seat adjuster switch and the seat rear height motor.

Is the repair complete?

--

Go to Power Seats System Check

--

9

Replace the power seat adjuster switch.

Is the repair complete?

--

Go to Power Seats System Check

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