GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check the IGN 1 Fuse in the fuse block for an open.

Is the IGN 1 Fuse open?

--

Go to Step 2

Go to Step 3

2

Repair the short to ground in CKT 39.

Has the repair been made and the system rechecked?

--

System OK

3

  1. Disconnect the instrument cluster connector C1.
  2. Turn the ignition switch to the RUN position.
  3. Using a test lamp, probe between the instrument cluster harness connector C1 terminal I and ground.

Is the test light on?

--

Go to Step 4

Go to Step 5

4

  1. Check for a poor connection at the instrument cluster.
  2. If OK, replace the instrument cluster. Refer to Instrument Cluster Replacement .

Has the repair been made and the system rechecked?

--

System OK

--

5

Repair the poor connection or open in CKT 39 between the fuse block terminal F4 and the instrument cluster harness connector C1 terminal I.

Has the repair been made and the system rechecked?

--

System OK

--