GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Outside Mirrors System Check?

--

Go to Step 2

Go to Outside Mirrors System Check

2

Inspect CTSY fuse for open.

Is the fuse open?

--

Go to Step 9

Go to Step 3

3

  1. Disconnect the outside rearview mirror control switch.
  2. Connect a test lampJ 35616-200 from CKT 40 (ORN) cavity H at the outside rearview mirror control switch to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

4

Locate and repair an open in CKT 40 (ORN) between the outside rearview mirror control switch and the IP fuse block.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

5

Connect a test lampJ 35616-200 from CKT 40 (ORN) cavity H to CKT 750 (BLK) cavity A at the outside rearview mirror control switch.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

6

  1. Disconnect the left outside rearview mirror.
  2. Using a DMMJ 39200 check for continuity in CKT 1496 (YEL) between the outside rearview mirror remote control switch and the left outside rearview mirror.

Is there continuity?

--

Go to Step 8

Go to Step 10

7

Locate and repair an open in CKT 750 (BLK) between the outside rearview mirror control switch and G110.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

8

Replace the outside rearview mirror control switch. Refer to Power Accessory Switch Panel Replacement .

Is the repair complete?

--

Go to Outside Mirrors System Check

--

9

  1. Locate and repair short to ground in CKT 40 (ORN).
  2. Install a new CTSY fuse.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

10

Locate and repair open in CKT 1496 between the outside rearview mirror remote control switch and S501.

Is the repair complete?

--

Go to Outside Mirrors System Check

--