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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 330 (ENGINE MECHANICAL - 2.2L)REMOVAL AND INSTALLATIONUNIT REPAIR CLEANING, INSPECTION, AND SELECTIONENGINE BLOCK CLEAN AND INSPECT
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Engine Block Clean And Inspect

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Engine Block Clean And Inspect
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean sealing material from the gasket mating surfaces.
    Fig 1: Cleaning Sealing Material From The Gasket Mating Surfaces
    G01039547Courtesy of GENERAL MOTORS CORP.
  2. Clean engine block and lower crankcase in a cleaning tank with solvent appropriate for aluminum.
  3. Flush engine block with clean water or steam.
  4. Clean oil passages.
  5. Clean blind holes.
  6. Spray cylinder bores and the machined surfaces with engine oil.
  7. Inspect threaded holes. Clean threaded holes with a rifle brush. If necessary, drill out damaged holes and install thread inserts.

    IMPORTANT:  Do not attempt to machine the lower crankcase to engine block surfaces.

  8. Use a straight edge and a feeler gauge to check the deck surface for flatness. Carefully machine minor irregularities. Replace the block if more than 0.254 mm (0.010 in.) must be removed.
  9. Inspect oil pan rail for nicks. Inspect the front cover attaching area for nicks. Use a flat mill file to remove any nicks.
    Fig 2: Checking The Deck Surface For Flatness
    G01039548Courtesy of GENERAL MOTORS CORP.
  10. Clean sealing material from gasket mating surfaces on lower crankcase engine block side.
    Fig 3: Cleaning Sealing Material From Gasket Mating Surfaces
    G01039549Courtesy of GENERAL MOTORS CORP.
  11. Clean sealing material from gasket mating surfaces on lower crankcase oil pan side.
    Fig 4: Cleaning Sealing Material From Gasket Mating Surfaces
    G01039550Courtesy of GENERAL MOTORS CORP.
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.