GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you Perform the Diagnostic System Check - Power Door Systems?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Using the Mirror Select Switch, select the mirror that is inoperative (L or R).
  4. Observe the Mirror Switch parameter in the Driver Door Switch Inputs list while activating the mirror position switch on the driver door switch assembly.

Does the Mirror Switch parameter change state?

Go to Step 3

Go to Step 4

3

  1. Observe the Mirror Motor parameter in the Outputs list of the door module of the inoperative mirror.
  2. Activate the mirror position switch on the driver door switch assembly.

Does the Mirror Motor parameter indicate an Output?

Go to Step 6

Go to Step 5

4

Inspect for poor connections at the harness connector of the driver door switch assembly. 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 10

Go to Step 9

5

Inspect for poor connections at the harness connector of the 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 10

Go to Step 8

6

Inspect for poor connections at the harness connector of the inoperative outside rear view 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 10

Go to Step 7

7

Replace the inoperative outside rear view mirror. Refer to Power Mirror Replacement .

Did you complete the replacement?

Go to Step 10

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8

Replace the door module of the inoperative mirror. Refer to Front Side Door Window Module Replacement .

Did you complete the replacement?

Go to Step 10

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9

Replace the driver door switch assembly Refer to Front Door Switch Replacement .

Did you complete the replacement?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2