GM Service Manual Online
For 1990-2009 cars only

RH Mirror Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: The RH mirror does not move UP or DOWN, LEFT or RIGHT.

1

Were you sent here from the DCM Diagnostic System Check?

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Go to Step 2

Go to Power Windows System Check

2

Check if any mirror DTCs are stored in the RDCM and LDCM as history. Refer to Diagnostic Trouble Code (DTC) List/Type .

Are any DTCs stored as history?

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Go to the Applicable Table

Go to Step 3

3

Using the mirror switch, select the LH mirror and operate the LH mirror UP, DOWN, LEFT and RIGHT.

Does the LH mirror operate in all directions?

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Go to Step 4

Go to Power Mirrors Inoperative - Left Side

4

  1. Using a scan tool, select LDCM inputs and monitor the passenger mirror select switch status.
  2. Press the RH mirror select switch.

Does the scan tool display ACTIVE when the RH mirror select switch is pressed?

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Go to Step 5

Go to Step 11

5

Using a scan tool, select RDCM and command the RH mirror UP and DOWN.

Does the RH mirror move UP and DOWN?

--

Go to Step 6

Go to Step 7

6

Using a scan tool, select RDCM and command the RH mirror LEFT and RIGHT.

Does the RH mirror move LEFT and RIGHT?

--

System OK

Go to Step 8

7

  1. Turn OFF the ignition switch.
  2. Disconnect the RH mirror connector C1.
  3. Turn ON the ignition switch.
  4. At the RH mirror connector C1 (harness side), connect a test light between terminals A and C.
  5. Using a scan tool, command the RH mirror UP and DOWN.

Does the test light turn ON and OFF with each command?

--

Go to Step 12

Go to Step 9

8

  1. At the RH mirror connector C1 (harness side), connect a test light between terminals F and H.
  2. Using a scan tool, command the RH mirror LEFT and RIGHT.

Does the test light turn ON and OFF with each command?

--

Go to Step 12

Go to Step 10

9

Check for an open or short to ground in CKT 889 or CKT 1498.

Was a problem found and repaired?

--

Go to Step 15

Go to Step 13

10

Check for an open or short to ground in CKT 90 or CKT 881.

Was a problem found and repaired?

--

Go to Step 15

Go to Step 13

11

Check for an open in CKT 1497 or CKT 150.

Was a problem found and repaired?

--

Go to Step 15

Go to Step 14

12

Replace the RH mirror assembly. Refer to Outside Rearview Mirror Replacement .

Is the replacement complete?

--

Go to Step 15

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13

  1. Replace the RDCM. Refer to Door Control Module Replacement .
  2. Program the replacement DCM (hardtop only). Refer to Door Control Module Programming/RPO Configuration .

Is the replacement complete?

--

Go to Step 15

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14

Replace the LH door switch assembly. Refer to Power Mirror Switch Replacement .

Is the replacement complete?

--

Go to Step 15

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15

  1. Turn OFF the ignition switch.
  2. Reconnect or install any connectors or components that were disconnected or removed.
  3. Turn ON the ignition switch.
  4. Clear any DTCs. Refer to Diagnostic Trouble Code (DTC) Clearing .

Is the repair complete?

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System OK

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