GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

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 Instrument Cluster System Check

2

Inspect CKT 35 (DK. GRN) for short to ground between PCM and Instrument Cluster.

Is the wiring OK?

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Go to Step 3

Go to Step 4

3

Disconnect PCM connector C1.

Does the engine coolant temperature indicator turn off?

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Go to Powertrain Control Module Controlled Warning Lamps Diagnosis PCM Controlled Warning Lamp Diagnosis

Go to Step 5

4

Repair wiring.

Is the repair complete?

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Go to Instrument Cluster System Check Instrument Cluster System Check

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5

Replace instrument cluster.

Is the replacement complete?

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Go to Instrument Cluster System Check Instrument Cluster System Check

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