GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Windows System Check?

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Go to Step 2

Go to Power Windows System Check

2

  1. Disconnect the RH front window switch.
  2. Turn the ignition switch to the RUN position.
  3. Using a test lamp, probe cavity 4 of the connector.

Does the test lamp illuminate?

--

Go to Step 3

Go to Step 4

3

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the LH window/door lock switch connector.
  3. Test for an open in the wire using a J 39200 DMM from cavity 2 of the RH front door connector to the cavity 6 of the LH front door connector.

Does the wire have an open?

--

Go to Step 6

Go to Step 5

4

Repair the open in the BLK wire from the connector or replace SP252, as needed. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

5

Test for an open in the GRN/RED wire using a J 39200 DMM from cavity 5 of the RH front door connector to cavity 14 of the LH window/door connector.

Does the wire have an open?

--

Go to Step 7

Go to Step 8

6

Repair the open in the BLU/WHT wire between the right and left door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

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7

Repair the open in the GRN/RED wire between the left and right door switches. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

8

  1. Reconnect the left door connector.
  2. Turn the ignition to the Run position.
  3. Using a test lamp, probe cavity 2 of the right door connector to ground and activate the left door switch to the window DOWN position.
  4. Using a test lamp, probe cavity 5 of the right door connector to ground and activate the left door switch to the window UP position.

Does the test lamp illuminate in each case?

--

Go to Step 9

Go to Step 10

9

  1. Reconnect the right door connector.
  2. Using a test lamp, backprobe cavity 1 of the right door connector to ground and activate the right door switch to the DOWN position.
  3. Using a test lamp, backprobe cavity 3 of the right door connector to ground and activate the right door switch to the UP position.

Does the test lamp illuminate in each case?

--

Go to Step 11

Go to Step 12

10

Replace the LH window/door lock switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

11

Test for an open in the GRN wire using a J 39200 DMM between the switch connector cavity 1 and the motor connector cavity 1.

Does the wire have an open?

--

Go to Step 14

Go to Step 13

12

Replace the RH front window switch. Refer to Front Side Door Window Switch Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

13

Test for an open in the YEL wire using a J 39200 DMM between the switch connector cavity 1 and the motor connector cavity 1.

Does the wire have an open?

--

Go to Step 16

Go to Step 15

14

Repair the open in the GRN wire between the switch and the motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

15

Replace the motor. Refer to Front Side Door Window Regulator Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

16

Repair the open in the YEL wire between the switch and the motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

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