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. Turn the ignition switch to the RUN position.
  2. Place the lockout switch in the OFF position.
  3. Use a test light in order to backprobe between the left front window switch harness connector C1 terminal D and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Repair a poor connection or an open in circuit 1307 between the left front window switch and S307.

Did you complete the repair and test the system?

--

Go to Power Windows System Check

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4

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

Did you complete the repair and test the system?

--

Go to Power Windows System Check

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