GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Interior Lights System Check performed

--

Go to Step 2

Go to Interior Lamps System Check

2

Inspect CKT 32 (YEL) between S223 and the underhood lamp for an open. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 5

Go to Step 3

3

Inspect CKT 1150 (BLK) between S128 and the underhood lamp for an open. Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 5

Go to Step 4

4

Replace the underhood lamp. Refer to Underhood Lamp Replacement .

Is the repair complete?

--

Go to Interior Lamps System Check

--

5

Repair or replace the faulty circuit. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--