GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2

  1. Disconnect the engine coolant temperature gauge sensor.
  2. Place the ignition switch in the RUN position.

Does the temperature gauge indicate COLD?

--

Go to Step 3

Go to Step 4

3

Replace the engine coolant temperature gauge sensor. Refer to Engine Coolant Temperature Sensor Replacement in Engine Cooling.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

--

4

Inspect for a short to ground in CKT 35 (DK GRN) between the engine coolant temperature gauge sensor and the instrument cluster.

Did you find a short?

--

Go to Step 5

Go to Step 6

5

Repair the short to ground in CKT 35 (DK GRN) between the engine coolant temperature gauge sensor and the instrument cluster.

s the repair complete?

--

Go to Instrument Cluster System Check

--

--

6

Replace the I/P Cluster. Refer to Instrument Cluster Replacement .

s the repair complete?

--

Go to Instrument Cluster System Check

--