GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the power mirrors circuit description and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms

2

Verify that the power folding mirrors are inoperative.

Do the power folding mirrors operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the outside rear view folding mirror switch.
  2. Turn the ignition switch to the RUN position.
  3. Connect a test lamp from CKT 1301 (DK GRN) cavity A at the outside rear view folding mirror switch to ground.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 4

4

Locate and repair an open in CKT 1301 (DK GRN) between the outside rear view folding mirror switch and the IP fuse block.

Did you complete the repair?

--

Go to Step 18

--

5

Connect a test lamp from CKT 1301 (DK GRN) cavity A to CKT 1850 (BLK) cavity C at the outside rear view folding mirror switch.

Does the test lamp illuminate?

--

Go to Step 6

Go to Step 7

6

Replace the outside rear view folding mirror switch.

Do the mirrors operate properly?

--

Go to Step 18

Go to Step 8

7

Locate and repair an open in CKT 1850 (BLK) between the outside rear view folding mirror switch and G202.

Did you complete the repair?

--

Go to Step 18

--

8

  1. Disconnect the LH outside rear view mirror connector C501 (4-door) or connector C502 (2-door).
  2. Place the outside rear view folding mirror switch in the extend position.
  3. Connect a test lamp from connector C501 (4-door) or connector C502 (2-door) terminal H, CKT 190 (YEL) to ground.

Does the test lamp illuminate?

--

Go to Step 10

Go to Step 9

9

Locate and repair an open in CKT 190 (YEL) between the outside rear view folding mirror switch and connector C501 (4-door) or connector C502 (2-door).

Did you complete the repair?

--

Go to Step 18

--

10

  1. Place the outside rear view folding mirror switch in the retract position.
  2. Connect a test lamp from connector C501 (4-door) or connector C502 (2-door) terminal K, CKT 191 (LT BLU) to ground.

Does the test lamp illuminate?

--

Go to Step 12

Go to Step 11

11

Locate and repair an open in CKT 191 (LT BLU) between the outside rear view folding mirror switch and connector C501 (4-door) or connector C502 (2-door).

Did you complete the repair?

--

Go to Step 18

--

12

Replace the LH outside rear view mirror.

Do the mirrors operate properly?

--

Go to Step 18

Go to Step 13

13

  1. Disconnect the RH outside rear view mirror connector C501 (4-door) or connector C502 (2-door).
  2. Place the outside rear view mirror power folding switch in the extend position.
  3. Connect a test lamp from connector C501 (4-door) or connector C502 (2-door) terminal J, CKT 190 (YEL) to ground.

Does the test lamp illuminate?

--

Go to Step 15

Go to Step 14

14

Locate and repair an open in CKT 190 (YEL) between the outside rear view mirror power folding switch and connector C501 (4-door) or connector C502 (2-door).

Did you complete the repair?

--

Go to Step 18

--

15

  1. Place the outside rear view mirror power folding switch in the retract position.
  2. Connect a test lamp from connector C501 (4-door) or connector C502 (2-door) terminal K, CKT 191 (LT BLU) to ground.

Does the test lamp illuminate?

--

Go to Step 17

Go to Step 16

16

Locate and repair an open in CKT 191 (LT BLU) between the outside rear view mirror power folding switch and connector C501.

Did you complete the repair?

--

Go to Step 18

--

17

Replace the RH outside rear view mirror.

Did you complete the repair?

--

Go to Step 18

--

18

Operate the system in order to verify the repair.

Did you find and correct the condition?

--

System OK

Go to Step 3