GM Service Manual Online
For 1990-2009 cars only

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 seat lateral motor electrical connector is connected.
  2. Using a J 39200 digital multimeter (DMM), backprobe the seat lateral motor connector terminal A (CKT 285) to ground.
  3. Operate the power seat adjuster switch to the FORWARD position.

Is voltage present?

--

Go to Step 3

Go to Step 5

3

  1. Ensure that the seat lateral motor electrical connector remains disconnected.
  2. Using the J 39200 DMM, backprobe the seat lateral motor connector terminal B (CKT 284) to ground.
  3. Operate the power seat adjuster switch to the REARWARD position.

Is voltage present?

--

Go to Step 4

Go to Step 6

4

Replace the seat lateral motor.

Is the repair complete?

--

Go to Power Seats System Check

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5

  1. Access the driver side power seat adjuster switch.
  2. Using the J 39200 DMM, backprobe the terminal connected to CKT 282 (TAN) to ground.
  3. Operate the power seat adjuster switch to the FORWARD position.

Is voltage present?

--

Go to Step 7

Go to Step 9

6

  1. Access the driver side power seat adjuster switch.
  2. Using the J 39200 DMM, backprobe the terminal connected to CKT 284 (LT GRN) to ground.
  3. Operate the power seat adjuster switch to the REARWARD position.

Is voltage present?

--

Go to Step 8

Go to Step 9

7

Locate and repair the open or high resistance in CKT 285 between the power seat adjuster switch and the seat lateral motor.

Is the repair complete?

--

Go to Power Seats System Check

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8

Locate and repair the open or high resistance in CKT 284 between the power seat adjuster switch and the seat lateral motor.

Is the repair complete?

--

Go to Power Seats System Check

--

9

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

Is the repair complete?

--

Go to Power Seats System Check

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