GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Outside Rearview Mirror Schematics

1

Did you perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

Verify the heated mirrors inoperative fault is present.

Do the heated mirrors operate normally?

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

4

  1. Disconnect the appropriate mirror.
  2. Start the engine.
  3. Connect a test lamp between the mirror heater control and the mirror heater ground circuit pins of the appropriate door module.
  4. Activate the rear window defogger switch.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5

Inspect for poor connections at the harness connector of the 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 9

Go to Step 7

6

Inspect for poor connections at the harness connector of the appropriate door module. 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 9

Go to Step 8

7

Replace the appropriate outside rearview mirror. Refer to Power Mirror Replacement .

Did you complete the replacement?

Go to Step 9

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8

Important: Perform the set up procedure for the appropriate door module. Refer to Service Programming System (SPS) in Programming.

Replace the appropriate door module. Refer to Door Lock and Side Window Switch Replacement - Driver Side or Door Lock and Side Window Switch Replacement - Passenger Side .

Did you complete the replacement?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2