GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Is the inoperative mirror the LH outside rearview mirror?

--

Go to Step 2

Go to Step 7

2

  1. Disconnect the LH outside rearview mirror wiring harness connector.
  2. Using a test light, probe between the LH outside rearview mirror harness connector (male side) terminal B and ground.
  3. Set the outside remote control rearview mirror switch to LH mirror.
  4. Press and hold the outside remote control rearview mirror switch to LEFT.

Did the test light come on?

--

Go to Step 3

Go to Step 4

3

Replace the LH mirror motor pack. Refer to Power Mirror Replacement .

Did you complete the repair?

--

Go to Step 11

--

4

Check for a poor connection or open in circuit 82.

Is there a poor connection or open in circuit 82?

--

Go to Step 5

Go to Step 6

5

Repair poor connection or open in circuit 82. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 11

--

6

Replace the outside remote control rearview mirror switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .

Did you complete the repair?

--

Go to Step 11

--

7

  1. Disconnect the RH outside rearview mirror wiring harness connector.
  2. Using a test light, probe between the RH outside rearview mirror harness connector (male side) connector terminal B and ground.
  3. Set the outside remote control rearview mirror switch to RH mirror.
  4. Press and hold the outside remote control rearview mirror switch to LEFT.

Did the test light come on?

--

Go to Step 8

Go to Step 9

8

Replace the RH mirror motor pack. Refer to Power Mirror Replacement .

Did you complete the repair?

--

Go to Step 11

--

9

Check for a poor connection or open in circuit 90.

Is there a poor connection or open in circuit 90?

--

Go to Step 10

Go to Step 6

10

Repair poor connection or open in circuit 90. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Diagnostic System Check - Door Systems