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. Connect a test lamp between the harness connector terminal 2 and terminal 3.
  3. Turn the ignition switch to RUN.
  4. Move the shift selector in and out of REVERSE.

Does the test lamp light with the shift lever in REVERSE?

--

Go to Step 3

Go to Step 4

3

Connect the test lamp between the inside rear view mirror harness connector terminal 1 and terminal 2.

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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