GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the cigar lighter connector.
  2. Connect a test lamp between terminal A of the cigar lighter or the auxilary power outlet connector 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 the cigar lighter or auxilary power outlet connector.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Backprobe the underhood wiring harness junction block connector C3 with a test lamp between terminal A1 and ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

4

Replace the cigar lighter or auxilary power outlet. Refer to Cigar Lighter Housing Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

System OK

--

5

Repair the open in CKT 250 between the cigar lighter or the auxilary power outlet and ground splice pack G203. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

System OK

--

6

Repair the open in CKT 40 between the underhood wiring harness junction block and the cigar lighter or the auxilary power outlet. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

System OK

--

7

Replace the underhood wiring harness junction block. Refer to Underhood Fuse Block Replacement in Engine Electrical.

Is the repair complete?

--

System OK

--