GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Automatic Day-Night Mirror Diagnostic System Check?

--

Go to Step 2

Go to Automatic Day-Night Mirrors System Check

2

  1. Disconnect the inside rear view mirror.
  2. Place the test lamp across harness connector terminals 2 and 3. Refer to Troubleshooting with a Test Lamp in Wiring Systems.
  3. Turn the ignition switch to RUN.
  4. Move the shift selector in and out of REVERSE.

Does the test lamp light with the PRNDL in REVERSE?

--

Go to Step 3

Go to Step 4

3

Place the test lamp across the inside rear view mirror harness connector terminals 1 and 2.

Refer to Troubleshooting with a Test Lamp in Wiring Systems.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

4

Place the shift selector in REVERSE.

Did the back-up lamps light?

--

Go to Step 7

Go to Backup Lamp System Check

5

Repair the open in CKT 241 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

--

6

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

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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