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HOMESERVICE MANUALSCHEVROLET1987HI-CUBE 6.2 J, 475/M40REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 33 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL)FUEL SYSTEM (GASOLINE)GOVERNOR ASSEMBLY (5.7L "G" SERIES)REMOVAL & INSTALLATION
1987 Chevrolet Hi-Cube 6.2 J, 475/M40

Removal & Installation

1987 Chevrolet Hi-Cube 6.2 J, 475/M40SECTION Removal & Installation
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove air cleaner. Disconnect wiring from governor assembly. Rotate the throttle cam lever to 11 o'clock position. Install a 14 mm socket to block throttle cam lever. See Figure.
  2. Remove mounting screws. Hold throttle valve closed. Remove governor assembly. See Figure.
  3. To install, make sure throttle cam lever is blocked open (11 o'clock position). Install governor assembly. See Figure. Remove 14 mm socket. Ensure throttle cam lever and throttle lever moves freely. To complete installation, install remaining parts.
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.