GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Outside Rearview Mirror Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you review the Outside Mirror Description and Operation?

Go to Step 2

Go to Symptoms - Doors

2

Verify that the heated mirrors inoperative fault is present.

Do the heated mirrors operate properly?

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

Go to Step 3

3

Does the rear window defogger operate properly?

Go to Step 4

Go to Symptoms - Stationary Windows in Stationary Windows

4

Test the heated mirror/rear defog relay coil supply voltage circuit of the appropriate outside rearview mirror harness connector for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 5

5

Test the ground circuit of the appropriate outside rearview mirror harness connector for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 6

6

Inspect for poor connections at the harness connector of the appropriate outside rearview mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

7

Replace the appropriate outside rearview mirror. Refer to Outside Rearview Mirror Motor Replacement .

Did you complete the replacement?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2