GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check the POWER SEATS circuit breaker.

Is the POWER SEATS circuit breaker open?

--

Go to Step 2

Go to Step 3

2

Repair short to ground in circuit 340 and replace the POWER SEATS circuit breaker.

Is the repair complete?

--

Go to Step 10

--

3

Using a test light, backprobe between the seat adjuster switch connector terminal C and ground.

Is the test light on?

--

Go to Step 4

Go to Step 5

4

Using a test light, backprobe between the seat adjuster switch connector terminal C and terminal D.

Is the test light on?

--

Go to Step 6

Go to Step 9

5

Repair poor connection or open in circuit 340.

Is the repair complete?

--

Go to Step 10

--

6

Check for a poor connection at the seat adjuster switch.

Is there a poor connection at the seat adjuster switch?

--

Go to Step 7

Go to Step 8

7

Repair the poor connection at the seat adjuster switch.

Is the repair complete?

--

Go to Step 10

--

8

Replace the seat adjuster switch. Refer to Power Seat Switch Replacement for service procedure.

Is the repair complete?

--

Go to Step 10

--

9

Repair poor connection or open in circuit 750.

Is the repair complete?

--

Go to Step 10

--

10

Reconnect connectors/components removed.

Is the action complete?

--

Go to Diagnostic System Check - Power Seat Systems

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