GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Power Seats System Check performed?

--

Go to Step 2

Go to Power Seats System Check

2

  1. Using a test light backprobe between the rear height motor connector terminals A and B.
  2. Press and hold the rear end of the driver/passenger seat adjuster switch in the UP and then DOWN positions.

Does the test light illuminate in both directions?

--

Go to Step 3

Go to Step 4

3

Replace the rear height motor. Refer to Front Seat Power Recliner Replacement .

Is the repair complete?

--

Go to Step 14

--

4

Did the test light illuminate when the driver/passenger seat adjuster switch was in the UP position?

--

Go to Step 5

Go to Step 6

5

  1. Using a test light, backprobe between the power seat switch connector terminal B and ground.
  2. Press and hold the back end of the driver/passenger seat adjuster switch in the DOWN position.

Does the test light illuminate?

--

Go to Step 7

Go to Step 8

6

  1. Using a test light, backprobe between the power seat switch connector terminal A and ground.
  2. Press and hold the back end of the driver/passenger seat adjuster switch in the UP position.

Does the test light illuminate?

--

Go to Step 9

Go to Step 8

7

Check for a short to ground in circuit 283.

Is there a short to ground present?

--

Go to Step 10

Go to Step 11

8

Replace the power seat switch. Refer to Power Seat Adjuster Mechanism Replacement .

Is the repair complete?

--

Go to Step 14

--

9

Check for a short to ground in circuit 282.

Is there a short to ground present?

--

Go to Step 12

Go to Step 13

10

Repair a short to ground in circuit 283.

Is the repair complete?

--

Go to Step 14

--

11

Repair the poor connection or open in circuit 283.

Is the repair complete?

--

Go to Step 14

--

12

Repair a short to ground in circuit 282.

Is the repair complete?

--

Go to Step 14

--

13

Repair the poor connection or open in circuit 282.

Is the repair complete?

--

Go to Step 14

--

14

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Power Seats System Check

--