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Head-Up Display (HUD) Inoperative

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Diagnosis of any HUD malfunctions must always begin with verifying proper IPC operation. See INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  1. If Head-Up Display (HUD) system check has been performed, go to next step. If Head-Up Display (HUD) system check has not been performed, see HEAD-UP DISPLAY (HUD) SYSTEM CHECK  under SYSTEM TESTS.
  2. Turn ignition off and back on. If all gauges sweep from minimum to maximum position, go to next step. If all gauges do not sweep from minimum to maximum position, go to INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  3. Turn ignition off. Move HUD display dimmer switch to maximum position. See Figure . Turn ignition on. If all segments of HUD display on windshield come on and turn off in 3.5 seconds, system is operating properly at this time. If HUD does not operate as specified, go to next step.
  4. Disconnect IPC and HUD switch connectors. See DRIVER INFORMATION CENTER (DIC) & HEAD-UP DISPLAY (HUD) CONTROL SWITCHES  under REMOVAL & INSTALLATION. Check for poor connections at HUD switch and IPC connectors. If connections are okay, go to next step. If poor connections are found and repaired, go to step  10 .
  5. Disconnect HUD display connector. See HEAD-UP DISPLAY (HUD) UNIT  under REMOVAL & INSTALLATION. Check for poor connections at HUD display connector. If connections are okay, go to next step. If poor connections are found and repaired, go to step  10 .
  6. Remove HUD switch from instrument panel. Test HUD switch circuits for short to ground, short to voltage, or open. See WIRING DIAGRAMS  . If circuits are okay, go to next step. If faulty circuits are found and repaired, go to step  10 .
  7. Replace HUD switch. See DRIVER INFORMATION CENTER (DIC) & HEAD-UP DISPLAY (HUD) CONTROL SWITCHES  under REMOVAL & INSTALLATION. Recheck system operation. If HUD system does not operate properly, go to next step. If HUD system operates properly, go to step  10 .
  8. Replace HUD unit. See HEAD-UP DISPLAY (HUD) UNIT  under REMOVAL & INSTALLATION. Recheck system operation. If HUD system does not operate properly, go to next step. If HUD system operates properly, go to step  10 .
  9. Replace IPC assembly. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. After repairs, go to next step.
  10. Recheck system operation to verify repair. If HUD system operates properly, repair is complete. If HUD system does not operate properly, go to step  2 .
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