GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Outside Mirrors System Check performed?

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Go to Step 2

Go to Outside Mirrors System Check .

2

Check for an open or short in the appropriate position sensor wiring:

    • LH Horizontal: CKT 786 (LT BLU/BLK).
    • LH Vertical: CKT 784 (LT GRN/BLK).
    • RH Horizontal: CKT 786 (LT BLU/BLK).
    • RH Vertical: CKT 784 (LT GRN/BLK).

Is the suspect wiring OK?

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Go to Step 3

Go to Step 4

3

Replace the suspect mirror position sensor. Refer to Power Mirror Replacement .

Is the mirror position sensor replacement complete?

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Go to Outside Mirrors System Check .

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4

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Outside Mirrors System Check .

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