GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the PWR SEATS circuit breaker.

Is the PWR SEATS circuit breaker open?

--

Go to Step 2

Go to Step 3

2

Repair a short to ground in circuit 340.

Has the repair been completed ?

--

Go to Step 10

--

3

Using a test light, backprobe between the driver/passenger seat adjuster switch connector terminal A and ground.

Does the test light illuminate?

--

Go to Step 4

Go to Step 5

4

Using a test light, backprobe between the driver/passenger seat adjuster switch connector terminal A and D.

Does the test light illuminate?

--

Go to Step 6

Go to Step 9

5

Repair the poor connection or an open in circuit 340.

Has the repair been completed ?

--

Go to Step 10

--

6

Check for a poor connection at the driver/passenger seat adjuster switch.

Is there a poor connection at the driver/passenger seat adjuster switch?

--

Go to Step 7

Go to Step 8

7

Repair the poor connection at the driver/passenger seat adjuster switch.

Has the repair been completed ?

--

Go to Step 10

--

8

Replace the driver/passenger seat adjuster switch. Refer to Power Seat Switch Replacement .

Has the repair been completed ?

--

Go to Step 10

--

9

Repair the poor connection or an open in circuit 750 to G301.

Has the repair been completed?

--

Go to Step 10

--

10

Verify that the system operates properly.

Does the system operate properly?

--

System OK

Go to Symptoms - Seats