GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the RIGHT REAR PWR SCKT fuse.

Is the RIGHT REAR PWR SCKT fuse open?

--

Go to Step 2

Go to Step 3

2

Repair short to ground in circuit 2540.

Has the repair been made and the system rechecked?

--

System OK

--

3

Use a test lamp in order to backprobe between the rear electric accessory plug housing terminal A and ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

4

Repair a poor connection or open in circuit 2540.

Has the repair been made and the system rechecked?

--

System OK

--

5

Use a test lamp in order to backprobe between the rear electric accessory plug housing terminal A and terminal B.

Does the test lamp light?

--

Go to Step 7

Go to Step 6

6

Repair a poor connection or open in circuit 850.

Has the repair been made and the system rechecked?

--

System OK

--

7

Replace the rear electric accessory plug housing. Refer to Accessory Port Replacement - Rear

Has the repair been made and the system rechecked?

--

System OK

--