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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 365 (ENGINE MECHANICAL - 3.8L (UNIT REPAIR))REPAIR INSTRUCTIONSPISTON AND CONNECTING ROD DISASSEMBLE
1999 GMC Forward Control 5.7 R, Automatic

Piston and Connecting Rod Disassemble

1999 GMC Forward Control 5.7 R, AutomaticSECTION Piston and Connecting Rod Disassemble
WARNING: This page is about a different car, the 2002 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Handle the piston carefully. Worn piston rings are sharp and may cause bodily injury.
  1. Remove the piston rings. Use a suitable tool to expand the rings. Piston rings must not be reused.
    Fig 1: Remove The Piston Rings
    G01764529Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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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.