GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the Instrument Cluster System Check?

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Go to Step 2

Go to Instrument Cluster System Check

2

  1. Start the engine.
  2. Disconnect the connector at the cooling fluid minimum capacity sensor (low coolant switch).

Is the low coolant level indicator ON?

--

Go to Step 3

Go to Step 4

3

Replace the cooling fluid minimum capacity sensor.

Is the replacement complete?

--

Go to Step 5

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4

  1. Disconnect the connector from the gauge cluster.
  2. Test for a short to ground in circuit XP2.
  3. If OK, replace the gauge cluster.

Is the repair or replacement complete?

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Go to Step 5

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5

  1. Connect all connectors and components that you previously removed.
  2. Test the low coolant indicator.

Does the low coolant indicator operate properly?

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System OK

Go to Step 2