GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Using a test light, backprobe between the instrument cluster harness connector terminal A2 and ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair a poor connection or an open in circuit 640 between S202 and the instrument cluster harness connector terminal A2.

Has the repair been made?

--

Go to Headlight System Check

--

3

Using a test light, backprobe between the instrument cluster harness connector terminal B7 and ground.

Does the test light illuminate?

--

Go to Step 4

Go to Step 5

4

Repair a poor connection or an open in circuit 1200 between the instrument cluster harness connector terminal B7 and the underhood accessory wiring junction block harness connector C2 terminal E6.

Has the repair been made?

--

Go to Headlight System Check

--

5

Service the instrument cluster. Refer to Instrument Cluster Replacement .

Has the repair been made?

--

Go to Headlight System Check

--