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Engine Coolant Temperature Gage Inaccurate or Inoperative

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Engine Coolant Temperature Gage Inaccurate or Inoperative

Step Action Yes No
Schematic Reference: Instrument Cluster Schematics 
1 Did you perform the Instrument Panel Cluster (IPC) Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Instrument Cluster 
2
  1. Install a scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. With the scan tool, perform the instrument panel cluster (IPC) Gages Output Control.
Does the engine coolant temperature gage move up and down when commanded?		 Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems Go to Step 3 
3
IMPORTANT: Program the replacement IPC.
Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement .Did you complete the replacement?		 Go to Step 4  -
4 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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