GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. With a test light,
  3. backprobe the instrument connector cluster from cavity 31 to B +.

Refer to Using Connector Test Adapters in Wiring Systems.

Did the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair the open in CKT 451 (BLK/WHT) between the instrument cluster connector and G 108.

Is the repair complete?

--

System OK

--

3

  1. Backprobe the instrument cluster with a J 39200 DMM from cavity 22 to ground.
  2. Measure the voltage.

Is the voltage less than the specified value?

10 V

Go to Step 4

Go to Step 5

4

Repair the open in CKT 439 (PNK) between the IP fuse block and the instrument cluster connector.

Is the repair complete?

--

System OK

--

5

Replace the instrument cluster

Is the repair complete?

--

System OK

--