GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the power window operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

2

Verify that the power window lockout function is inoperative.

Does the system operate properly?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Disconnect the left front window switch harness connector.
  2. At harness connector C1 of the left front window switch, use a test lamp in order to backprobe between the lockout control circuit and ground

Does the test light illuminate?

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Go to Step 5

Go to Step 4

4

Replace the left front 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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5

Repair the short to B+ in the power window lockout control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

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?

--

System OK

Go to Symptoms