GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lamps System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

  1. Place the ignition switch in the OFF position.
  2. Close all of the doors.
  3. Open the left front door.
  4. Close the left front door.

Do the courtesy lamps light and remain on for the specified time period?

40 seconds

Go to Interior Lamps System Check

Go to Step 3

3

Does the vehicle have a remote keyless entry (RKE) system?

--

Go to Step 4

Go to Step 6

4

Attempt to operate all of the functions of the RKE system.

Do all of the LOCK and the UNLOCK functions operate correctly?

--

Go to Step 5

Go to Remote Keyless Entry System Check

5

Replace the remote control door lock receiver. Refer to Receiver Replacement in Keyless Entry.

Is the replacement complete?

--

Go to Interior Lamps System Check

--

6

Use a test lamp in order to backprobe CKT 40 (ORN) cavity A from the interior control module connector to ground.

Does the test lamp light?

--

Go to Step 7

Go to Step 8

7

Use a test lamp in order to backprobe CKT 39 (PNK) cavity A from the interior lamp control module connector to ground.

Does the test lamp light?

--

Go to Step 9

Go to Step 10

8

Repair the open in CKT 40 (ORN) between the interior lamp control module and splice S220.

Is the repair complete?

--

Go to Interior Lamps System Check

--

9

Repair the short to power in CKT 39 (PNK) to the instrument panel fuse block.

Is the repair complete?

--

Go to Interior Lamps System Check

--

10

  1. Turn the ignition switch to the ON position.
  2. Disconnect the interior lamp control module.
  3. Use a test lamp in order to probe CKT 1050 (BLK) cavity D of the interior lamp control module connector to cavity C.

Does the test lamp light?

--

Go to Step 11

Go to Step 12

11

Replace the interior lamp control module. Refer to Interior Lamp Control Module Replacement .

Is the repair complete?

--

Go to Interior Lamps System Check

--

12

Repair the open in CKT 1050 (BLK) between the interior lamp control module and ground G200.

Is the repair complete?

--

Go to Interior Lamps System Check

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