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

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

Is the symptom still present?

--

Go to Step 3

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

  1. Repair the poor connection or the open in CKT 811.
  2. Inspect the system.

Is the symptom still present?

--

Go to Step 5

System OK

5

  1. Replace the instrument cluster. Refer to Instrument Cluster Replacement .
  2. Inspect the system.

Is the symptom still present?

--

--

System OK