GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Using a test light, backprobe the affected seat adjuster switch connector terminal F and ground

Is the test light ON?

--

Go to Step 2

Go to Step 6

2

Using a test light, backprobe the affected seat adjuster switch connector terminal F and terminal C

Is the test light ON?

--

Go to Step 3

Go to Step 7

3

Inspect for a poor connection at the affected seat adjuster switch.

Is there a poor connection at the affected seat adjuster switch?

--

Go to Step 4

Go to Step 5

4

Repair the poor connection at the affected seat adjuster switch.

Has the repair been made and the system rechecked?

--

Go to Power Seats System Check

--

5

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

Has the repair been made and the system rechecked?

--

Go to Power Seats System Check

--

6

Repair the following condition in CKT 340 between S302 and the affected seat adjuster switch connector terminal F:

    • a poor connection
    • an open

Has the repair been made and the system rechecked?

--

Go to Power Seats System Check

--

7

Repair the following condition in CKT 550 between the affected seat adjuster switch connector terminal C and S333:

    • a poor connection
    • an open

Has the repair been made and the system rechecked?

--

Go to Power Seats System Check

--