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HOMESERVICE MANUALSCHEVROLET2000CAB & CHASSIS K2500, 7.4 J, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 30 (ANALOG INSTRUMENT PANELS - NEW STYLE)SYSTEM TESTINSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC SYSTEM CHECKTESTING
2000 Chevrolet Cab & Chassis K2500, 7.4 J, Automatic

Instrument Panel Cluster (IPC) Diagnostic System Check: Testing

2000 Chevrolet Cab & Chassis K2500, 7.4 J, AutomaticSECTION Testing
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Yukon XL, 2000 GMC Yukon, 2000 GMC Sierra, 2000 Chevrolet Tahoe, and 2000 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to Data Link Connector (DLC). If scan tool does not power up, go to SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS in BODY CONTROL MODULES - SIERRA, SILVERADO, SUBURBAN, TAHOE, YUKON & YUKON XL article.
  2. Turn ignition switch to ON position. Using scan tool, attempt to establish communications with the following modules.
    • Automatic Transfer Case (ATC) Module
    • Body Control Module (BCM)
    • Electronic Brake Control Module (EBCM)
    • Instrument Panel Cluster (IPC)
    • Real Time Damping (RTD) Module
    • Supplemental Restraint System (SRS) Module
    • Vehicle Control Module (VCM)
    If communication is established, go to next step. If communication cannot be established, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SIERRA, SILVERADO, SUBURBAN, TAHOE, YUKON & YUKON XL article.
  3. Using scan tool display, select DISPLAY DTCs function for the following control modules.
    • Automatic Transfer Case (ATC) Module
    • Body Control Module (BCM)
    • Electronic Brake Control Module (EBCM)
    • Instrument Panel Cluster (IPC)
    • Real Time Damping (RTD) Module
    • Supplemental Restraint System (SRS) Module
    • Vehicle Control Module (VCM)
    If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, perform appropriate procedure under SYMPTOM TESTS .
    4. NOTE: For additional information on VCM self-diagnostic system and DTCs, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  4. If scan tool does not display any DTCs beginning with "U", go to next step. If scan tool displays any DTCs beginning with "U" (indicating another module is not communicating), see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SIERRA, SILVERADO, SUBURBAN, TAHOE, YUKON & YUKON XL article.
  5. If scan tool displays DTC P1397, P1398 or P1480, perform appropriate test under DIAGNOSTIC TESTS in BODY CONTROL MODULES - SIERRA, SILVERADO, SUBURBAN, TAHOE, YUKON & YUKON XL article. If scan tool does not display DTC P1397, P1398 or P1480, go to DIAGNOSTIC TESTS .
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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