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Check Coolant Temperature Indicator Not Operating Properly

WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform INSTRUMENT PANEL CLUSTER SYSTEM CHECK  under SYSTEM TESTS. Go to next step.
  2. Connect scan tool to DLC and turn ignition on. Select Instrument Panel Cluster (IPC) special functions LAMP TEST on scan tool. Command indicators on and off. If engine coolant temperature indicator turns on and off when commanded, go to POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - GASOLINE - EXCEPT METRO, PRIZM & TRACKER article in ENGINE PERFORMANCE. If engine coolant temperature indicator does not turn on and off when commanded, go to next step.
  3. Replace instrument panel cluster. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK  under SYSTEM TESTS.
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