GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

Connector End View Reference: Power Door Systems Connector End Views or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. Disable the window lockout function.
  2. Operate the passenger power windows from the passenger door power window switches.

Do the passenger power windows operate normally?

Go to Step 3

Go to Power Window Inoperative - Passenger Door

3

  1. Enable the window lockout function.
  2. Operate the passenger power windows from the passenger door power window switches.

Do the passenger power windows operate up and down?

Go to Step 4

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

4

  1. Install a scan tool.
  2. Monitor the Window Lockout Data parameter in the driver door module (DDM) input list.
  3. Place the window lockout switch in both the ON and OFF positions.

Does the Window Lockout Data parameter change accordingly?

Go to Step 5

Go to Step 10

5

Does the window lockout function for the front passenger power window operate properly?

Go to Step 6

Go to Step 9

6

  1. Disable the window lockout function.
  2. Disconnect the appropriate rear window switch.
  3. Connect a test lamp to a good ground.
  4. Probe the rear window lockout signal circuit at the rear window switch harness connector.

Does the test lamp illuminate?

Go to Step 7

Go to Step 11

7

Test for a short to battery positive voltage on the rear window lockout signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 16

Go to Step 8

8

Inspect for poor connections at the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 16

Go to Step 12

9

Inspect for poor connections at the passenger door module (PDM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 16

Go to Step 13

10

Inspect for poor connections at the DDM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 16

Go to Step 14

11

Inspect for poor connections at the rear power window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 16

Go to Step 15

12

Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the repair?

Go to Step 16

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13

Replace the PDM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the repair?

Go to Step 16

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14

Replace the DDM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the repair?

Go to Step 16

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15

Replace the rear power window switch. Refer to Rear Side Door Window Switch Replacement .

Did you complete the repair?

Go to Step 16

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16

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2