GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch on.
  2. Place the lock out switch in the OFF position.
  3. Using a test light, backprobe between the LF window switch harness connector C2 terminal A and ground.

Is the test light on?

--

Go to Step 2

Go to Step 3

2

Repair poor connection or open in circuit 1307 between LF window switch and S307.

Is the repair complete?

--

Go to Power Windows System Check

--

3

Replace LF window switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement for service procedure.

Is the repair complete?

--

Go to Power Windows System Check

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