GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Outside Mirrors System Check performed?

--

Go to Step 2

Refer to Outside Mirrors System Check

2

  1. Disconnect the outside rear view mirror power folding 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 mirror power folding switch to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

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

Do the mirrors operate properly?

--

Refer to Outside Mirrors System Check

Go to Step 4

4

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

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

Replace the outside rear view mirror power folding switch.

Do the mirrors operate properly?

--

Refer to Outside Mirrors System Check

Go to Step 7

6

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

Do the mirrors operate properly?

--

Refer to Outside Mirrors System Check

--

7

  1. Disconnect the LH outside rear view mirror connector C504.
  2. Place the outside rear view mirror power folding switch in the extend position.
  3. Connect a test lamp from connector C504 terminal J, CKT 190 (YEL) to ground
  4. Does the test lamp light?

--

Go to step 9

Go to Step 8

8

Locate and repair an open in CKT 190 (YEL) between the outside rear view mirror power folding switch and connector C504.

Does the LH mirror operate properly?

--

Refer to Outside Mirrors System Check

--

9

  1. Place the outside rear view mirror power folding switch in the retract position.
  2. Connect a test lamp from connector C504 terminal K, CKT 191 (LT BLU) to ground
  3. Does the test lamp light?

--

Go to Step 11

Go to Step 10

10

Locate and repair an open in CKT 191 (LT BLU) between the outside rear view mirror power folding switch and connector C504.

Does the LH mirror operate properly?

--

Refer to Outside Mirrors System Check

--

11

Replace the LH outside rear view mirror.

Does the LH mirror operate properly?

--

Refer to Outside Mirrors System Check

--

12

  1. Disconnect the RH outside rear view mirror connector C604.
  2. Place the outside rear view mirror power folding switch in the extend position.
  3. Connect a test lamp from connector C604 terminal J, CKT 190 (YEL) to ground
  4. Does the test lamp light?

--

Go to Step 14

Go to Step 13

13

Locate and repair an open in CKT 190 (YEL) between the outside rear view mirror power folding switch and connector C604.

Does the RH mirror operate properly?

--

Refer to Outside Mirrors System Check

--

14

  1. Place the outside rear view mirror power folding switch in the retract position.
  2. Connect a test lamp from connector C604 terminal K, CKT 191 (LT BLU) to ground
  3. Does the test lamp light?

--

Go to Step 16

Go to Step 15

15

Locate and repair an open in CKT 191 (LT BLU) between the outside rear view mirror power folding switch and connector C604.

Does the RH mirror operate properly?

--

Refer to Outside Mirrors System Check

--

16

Replace the RH outside rear view mirror.

Does the RH mirror operate properly?

--

Refer to Outside Mirrors System Check

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