GM Service Manual Online
For 1990-2009 cars only

Power Mirrors Inoperative in Left/Right Direction - One Without Memory

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Mirrors System Check?

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Go to Step 2

Go to Outside Mirrors System Check

2

  1. Set the mirror select switch to the inoperative mirror.
  2. Use the digital multimeter (DMM) in order to backprobe the outside mirror switch.
  3. • Terminal M and terminal B (LH outside rearview mirror).
    • Terminal M and terminal E (RH outside rearview mirror).
  4. Position the outside mirror switch to the left and then to the right.

Does the voltage measure within the specified range?

10-15 V

Go to Step 3

Go to Step 7

3

  1. Disconnect the inoperative outside rearview mirror connector.
  2. Connect a DMM between terminal A and terminal B of the outside rearview mirror connector.
  3. Position the outside mirror switch to the left and then to the right.

Does the voltage measure within the specified range?

10-15 V

Go to Step 8

Go to Step 4

4

  1. Connect a DMM between the outside rearview mirror connector terminal B and ground.
  2. Position the outside mirror switch to the right direction.

Does the voltage measure within the specified range?

10-15 V

Go to Step 6

Go to Step 5

5

Repair the open or short to ground in the CKT.

    • 81 (WHT) (LH outside rear view mirror).
    • 881 (RED/WHT) (RH outside rear view mirror).

Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Outside Mirrors System Check

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6

Repair the open or short to ground in CKT 82 (LT BLU).

Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Outside Mirrors System Check

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7

Replace the outside mirror switch.

Refer to Power Mirror Switch Replacement .

Did you complete the repair?

--

Go to Outside Mirrors System Check

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8

Replace the suspect outside rear view mirror.

Refer to Power Mirror Replacement .

Did you complete the repair?

--

Go to Outside Mirrors System Check

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