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HOMESERVICE MANUALSCHEVROLET1999SUBURBAN C2500, 6.5 FREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSON-VEHICLE TESTING (CHARGING SYSTEM)CHARGE INDICATOR LIGHT ALWAYS ON ("L" & "M" SERIES)
1999 Chevrolet Suburban C2500, 6.5 F

Charge Indicator Light Always On ("L" & "M" Series)

1999 Chevrolet Suburban C2500, 6.5 FSECTION Charge Indicator Light Always On ("L" & "M" Series)
  1. Ensure ignition is off. Disconnect generator connector. Turn ignition on. If charge indicator light is off, go to next step. If charge indicator light is on, go to step  3.
  2. Disconnect connector C100 located at left front of instrument panel. See WIRING DIAGRAMS . Turn ignition on. If charge indicator light is on, go to step  4. If charge indicator light is off, go to step  5.
  3. Replace generator. See GENERATOR  under REMOVAL & INSTALLATION. Recheck system.
  4. Repair short in Brown wire between instrument panel connector B16 and connector C100. See WIRING DIAGRAMS . Recheck system.
  5. Repair short in Brown wire between generator terminal "L" and connector C100 located at left front of instrument panel. See WIRING DIAGRAMS . Recheck system.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.