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 the power windows lockout function is inoperative.

Does the power windows lockout function operate normally?

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

Go to Step 3

3

  1. Access the left door lock and side window switch.
  2. Turn the ignition switch to the RUN position.
  3. Place the window lockout switch in the LOCKED position.
  4. Connect a digital multimeter (DMM) to CKT 1307 (DK BLU), terminal B at the window lockout switch and ground.
  5. Test for voltage. Refer to Circuit Testing in wiring systems.

Is battery voltage present?

B+

Go to Step 6

Go to Step 4

4

  1. Turn the ignition switch to the RUN position.
  2. Place the window lockout switch in the LOCKED position.
  3. Connect a DMM to CKT 1307 (DK BLU) at S306 and ground.
  4. Test for voltage. Refer to Circuit Testing in wiring systems.

Is battery voltage present?

B+

Go to Step 5

Go to Step 7

5

Repair the short to voltage in CKT 1307 (DK BLU) between the window lockout switch and S306. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

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Go to Step 7

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6

Replace the window lockout switch.

Is the repair complete?

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Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3