GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

Verify that one of the power door lock switches is inoperative.

Do the power door lock switches operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the door lock and side window switch that is not functioning.
  2. Connect a test lamp between the door lock and side window switch connector terminal D, CKT 840 (ORN) and battery ground.

Did the test lamp light?

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Go to Step 5

Go to Step 4

4

Repair the open in CKT 840 (ORN). Refer to Wiring Repairs in wiring systems.

Is the repair complete?

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Go to Step 6

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5

Replace the door lock and side window switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

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Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3