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. Disconnect the power seat switch connector.
  2. Connect a test lamp between terminal A of the power seat switch harness connector and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Connect a test lamp between terminal A and terminal D of the power seat switch harness connector.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Use a test lamp in order to backprobe connector C3 of the left IP wiring harness junction block between terminal A8 and ground.

Does the test lamp light?

--

Go to Step 7

Go to Step 8

5

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

Is the repair complete?

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Go to Power Seats System Check

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6

Repair the open in CKT 550 between the power seat switch and ground splice pack G301. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

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7

Repair the open in CKT 540, between the left IP wiring harness junction block and the power seat switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

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8

Replace the left IP wiring harness junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems.

Is the repair complete?

--

Go to Power Seats System Check

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