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HOMESERVICE MANUALSCHEVROLET1982FORWARD CONTROL 4.8L ENG VIN T, AUTOMATIC TRANS, TRANS MFR CD 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESBRAKES CONTROL SYSTEMSHYDRAULIC SYSTEM CONTROL VALVESTESTINGBRAKE WARNING LIGHT SYSTEMWARNING LIGHT SWITCH
1982 Chevrolet Forward Control 4.8L Eng VIN T, Automatic Trans, Trans Mfr CD 475/M40

Warning Light Switch

1982 Chevrolet Forward Control 4.8L Eng VIN T, Automatic Trans, Trans Mfr CD 475/M40SECTION Warning Light Switch
  1. Attach a bleeder hose to bleeder screw at either rear brake. Immerse other end of hose in container with brake fluid. Turn ignition "ON". Open bleeder screw while pressure is being applied to brake pedal. Warning lamp should light. Close bleeder screw before pressure is released from pedal.
  2. Reapply pedal pressure (moderate to heavy). Light should go out. Repeat test on front brake system. System should function in same manner. Turn ignition "OFF". If lamp does not light during test on either system, but electrical system checked good, the warning light switch portion of valve is defective.
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.