GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the left power window switch connector C2.
  2. Turn the ignition on.
  3. Momentary connect a fused jumper between CKT 167 (TAN) cavity C or CKT 166 (LT BLU) cavity B and ground.

Does the right window operate up or down?

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Go to Step 2

Go to Step 3

2

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

Is the repair complete?

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System OK

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3

Locate and repair the open in circuits 167 and 166 respectfully.

Is the repair complete?

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System OK

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