GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Automatic Day/Night Mirrors System Check?

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Go to Step 2

Go to Automatic Day-Night Mirrors System Check

2

  1. Turn the ignition switch to the RUN position.
  2. Place the shift lever in REVERSE.

Are the backup lights on?

--

Go to Step 3

Go to Backup Lamp System Check

3

Use a J 39200 digital multimeter (DMM) in order to backprobe the inside rear view mirror connector between cavity 3 (LT GRN) and ground. Refer to Probing Electrical Connectors in Wiring Systems.

Is the voltage within the specified range?

10-15 V

Go to Step 4

Go to Step 7

4

Use the J 39200 digital multimeter (DMM) in order to backprobe the inside rear view mirror connector between cavity 3 (LT GRN) and cavity 2 (BLK/WHT). Refer to Probing Electrical Connectors in Wiring Systems.

Is the voltage within the specified range?

10-15 V

Go to Step 5

Go to Step 6

5

Replace the inside rear view mirror. Refer Inside Rearview Mirror Replacement .

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

--

6

Repair the open in CKT 351 (BLK/WHT). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

--

7

Repair the open in CKT 24 (LT GRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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