GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition ON and the engine OFF.
  2. Disconnect the engine coolant temperature gauge sensor connector.

Does the gauge move back to the left (cold)?

--

Go to Step 2

Go to Step 3

2

Replace the engine coolant temperature gauge sensor connector.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

3

Inspect CKT 135 for a short to ground.

Did you repair a short to ground?

--

Go to Instrument Cluster System Check

Go to Step 4

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

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