GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the left front power window switch.
  2. Turn the ignition switch to the RUN position.
  3. Connect a test lamp between terminal C of left front power window switch connector C2 and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

Connect a test lamp between terminal A and terminal C of left front power window switch connector C2.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Use a test lamp in order to backprobe the right IP junction block between terminal A8 of connector C3 and ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

4

Replace the left front power window switch. Refer to Door Lock Switch Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--

5

Repair the open in CKT 550 between the left front power window switch and ground splice pack G301. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

6

Repair the open in CKT 141 between the right IP junction block and the left front power window switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Windows System Check

--

7

Replace the right IP junction block. Refer to Relay/Fuse Center Replacement .

Is the repair complete?

--

Go to Power Windows System Check

--