GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: The LH front power window is inoperative. All other power windows operate correctly from left window switch and selected door switch.

1

Was the Power Windows System Check performed?

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Go to Step 2

Go to Power Windows System Check

2

  1. Connect scan tool.
  2. Select DATA from driver door module DATA List.
  3. Operate the left front window switch in the Up and Down directions.

Does the scan tool indicate that the switch is operating correctly?

--

Go to Step 4

Go to Step 3

3

Replace the LH Front Power Window Switch. Refer to Front Door Switch Replacement .

Is the repair complete?

--

Go to Power Windows System Check

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4

  1. Disconnect the LH front power window motor at the motor.
  2. Using a digital multimeter (DMM), measure the voltage between window motor terminal A and terminal B while pressing the left front window switch in the up and down directions.

Is the voltage within the specified range for both measurements?

10-15 V

Go to Step 5

Go to Step 6

5

Replace the LH front power window motor. Refer to Power Window Motor Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

6

  1. Disconnect the driver door module connector C3.
  2. Using a DMM, measure the resistance between window motor harness connector terminal A and door module harness connector C3 terminal B.

Is the resistance within the specified range?

0-5 ohms

Go to Step 8

Go to Step 7

7

Repair the open in CKT 165 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

8

Using a DMM, measure the resistance between window motor harness connector terminal B and door module harness connector C3 terminal C.

Is the resistance within the specified range?

0-5 ohms

Go to Step 10

Go to Step 9

9

Repair open in CKT 164 (DK BLU). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

10

Replace the driver door module. Refer to Door Control Module Replacement .

Is the repair complete?

--

Go to Power Windows System Check

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