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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 823 (ENGINE MECHANICAL - 4.3L (UNIT REPAIR))COMPONENT LOCATORENGINE IDENTIFICATION
2004 Oldsmobile Bravada AWD

Engine Identification

2004 Oldsmobile Bravada AWDSECTION Engine Identification
WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Vehicle Identification Number Derivative
G01689535Courtesy 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).
    Fig 2: Engine Identification Number (Tonawanda)
    G01689536Courtesy of GENERAL MOTORS CORP.
  • 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 3: Engine Identification Number (Romulus)
    G01689537Courtesy 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.
    • The seventh, eighth, and ninth digits (5) are the broadcast code.
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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.