GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Remove Fuse 25 from the fuse block.
  2. Turn the ignition switch to the RUN position.
  3. Use a fused 5 amp jumper in order to probe between the fuse block terminal G6 and ground.

Does the speedometer display km/h?

--

Go to Step 2

Go to Step 3

2

Repair the poor connection or the open in CKT 1550 between the fuse block terminal G5 and G201.

Is the repair complete?

--

System OK

--

3

Inspect for a poor connection or an open in CKT 811.

Does a poor connection or an open exist in CKT 811?

--

Go to Step 4

Go to Step 5

4

Repair the poor connection or the open in CKT 811.

Is the repair complete?

--

System OK

--

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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