Was the instrument panel cluster (IPC) system check performed?

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Go to Step 2

Go to Instrument Cluster System Check

1. With the scan tool, select instrument panel cluster, data display, and data
2. Start the engine and run to operating temperature.
3. Select the displayed coolant temp display on the scan tool.
4. Compare the displayed Coolant Temp data on the scan tool to the temperature gauge reading on the cluster.

Important: There is a flat band in the gauge where the engine temp is between 190°F and 220°F and gauge stays at 200°F.

Are the temperatures on the scan tool and the gauge approximately the same outside the flat band?

Approx. 93°C (200°F) @ steady state

Go to Step 3

Go to Step 6

With the scan tool, read the Monitored Coolant Temp.

Is the Monitored Coolant Temp in the range of 100 - 260°F (38 - 127°C)?

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Go to Step 4

Go to Step 5

Compare the Monitored Coolant Temp with the Displayed Coolant Temp.

Are the temperatures approximately the same?

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Go to Intermittents and Poor Connections Diagnosis

Go to Step 6

1. If the Monitored Coolant Temp is less than 100°F (38°C), the gauge should be at or near its lowest reading.
2. If the Monitored Coolant Temp is greater than 260°F (127°C), the gauge should be at or near the maximum reading.

Is the gauge reading properly?

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Go to Powertrain On Board Diagnostic (OBD) System Check for 4.3L.

or Powertrain On Board Diagnostic (OBD) System Check for 4.8L, 5.3L and 6.0L in Engine Controls

Go to Step 6

Replace the IPC. Refer to Instrument Cluster Replacement

Is the repair complete?

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Go to Instrument Cluster System Check

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