GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

Verify that the LH heated mirror is inoperative.

Do the heated mirrors operate normally?

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

Go to Step 3

3

Connect a test lamp to terminal A and terminal H of the LH outside rear view mirror harness connector.

Does the test lamp illuminate?

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Go to Step 4

Go to Step 5

4

Replace the LH outside rear view mirror. Refer to Outside Rearview Mirror Replacement .

Did you complete the repair?

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Go to Step 6

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5

Repair the open or the high resistance in CKT 2267 (ORN) or CKT 1850 (BLK). Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 6

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6

Operate the system in order to verify the repair.

Did you find and correct the condition?

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System OK

Go to Step 3