GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Ensure proper connection of the power seat switch.
  2. Use a test lamp in order to backprobe the power seat switch between terminal E and terminal F.
  3. Move the power seat switch to the FRONT UP and the FRONT DOWN positions.

Does the test lamp light with the switch in both positions?

--

Go to Step 2

Go to Step 3

2

  1. Use a test lamp in order to backprobe the front height motor connector between terminal A and ground.
  2. Move the power seat switch to the FRONT DOWN position.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

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

Did you complete the repair?

--

Go to Power Seats System Check

--

4

  1. Use a test lamp in order to backprobe the front height motor connector between terminal B and ground.
  2. Move the power seat switch to the FRONT UP position.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

5

Repair the open in CKT 287 between the power seat switch and the front height motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Seats System Check

--

6

Replace the rear height motor. Refer to Front Seat Adjuster Motor Replacement .

Did you complete the repair?

--

Go to Power Seats System Check

--

7

Repair the open in CKT 286 between the power seat switch and the front height motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Power Seats System Check

--