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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 9 (ENGINE MECHANICAL - 4.3L UNIT REPAIR)COMPONENT LOCATORENGINE IDENTIFICATION
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Engine Identification

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Engine Identification
WARNING: This page is about a different variant/trim than selected.
Fig 1: Locating VIN On Left & Right Rear Side Of Engine Block
G02502744Courtesy of GENERAL MOTORS CORP.
  • The Vehicle Identification Number (VIN) Derivative is located on the left side rear of the engine block (1) or on the right side rear (2) and typically is a nine digit number stamped or laser etched onto the engine at the vehicle assembly plant.
    • The first digit identifies the division.
    • The second digit identifies the model year.
    • The third digit identifies the assembly plant.
    • The fourth through ninth digits are the last six digits of the Vehicle Identification Number (VIN).
  • Engines built at the Tonawanda engine plant have the engine identification number located at the right front top of the engine block.
    • The first digit (1) is the source code.
    • The second and third digits (2) are the month of build.
    • The forth and fifth digits (3) are the date of build.
    • The sixth, seventh, and eighth digits (4) are the broadcast code.
      Fig 2: Locating VIN On Right Front Top Of Engine Block (Tonawanda Plant)
      G02502745Courtesy of GENERAL MOTORS CORP.
  • Engines built at the Romulus engine plant have the engine identification number located at the right front top of the engine block.
    • The first digit (1) is the source code.
    • The second and third digits (2) are the month of build.
    • The fourth digit (3) is the hour of the build.
    • The fifth and sixth digits (4) are the date of build.
    • Fig 3: Locating VIN On Right Front Top Of Engine Block (Romulus Plant)
    G02502746Courtesy of GENERAL MOTORS CORP.
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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.