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 RR power window is inoperative.

Do the power windows operate normally?

--

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

Go to Step 3

3

  1. Disconnect the RR side window switch connector.
  2. Turn the ignition switch to the RUN position.
  3. Connect a digital multimeter (DMM) to CKT 170 (DK GRN) terminal A and CKT 171 (PPL) terminal D at the RR side window switch connector.
  4. Operate the RR window from the LH door lock and side window switch in the UP/DOWN positions.
  5. Test for voltage. Refer to Circuit Testing in wiring systems.

Is battery voltage present in both directions?

B+

Go to Step 4

Go to Step 5

4

  1. Reconnect the RR side window switch connector.
  2. Disconnect the RR side window regulator motor connector.
  3. Turn the ignition switch to the RUN position.
  4. Connect a DMM to CKT 670 (DK BLU), terminal B and CKT 671 (BRN), terminal A at the RR side window regulator motor connector.
  5. Operate the RR window from the LH door lock and side window switch in the UP/DOWN positions.
  6. Test for voltage. Refer to Circuit Testing in wiring systems.

Is battery voltage present in both directions?

B+

Go to Step 10

Go to Step 6

5

Test CKT'S 170 (LT GRN), and 171 (PPL) for an open. Refer to Circuit Testing in wiring systems.

Was an open present?

--

Go to Step 7

Go to Step 8

6

Test CKT'S 670 (DK BLU), and 671 (BRN) for an open. Refer to Circuit Testing in wiring systems.

Was an open present?

--

Go to Step 7

Go to Step 9

7

Repair the open in the appropriate circuit. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

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Go to Step 11

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8

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

Is the repair complete?

--

Go to Step 11

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9

Replace the RR side window switch. Refer to Front Side Door Window Switch Replacement

Is the repair complete?

--

Go to Step 11

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10

Replace the RR side window regulator motor. Refer to Power Window Motor Replacement

Is the repair complete?

--

Go to Step 11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3