2002 GMC C3500 HD 8.1 G, AutomaticFACTORY OEM SERVICE PROCEDURE

Installation Procedure

  1. Position the air cleaner assembly (1) onto the air cleaner adapter. Ensure the retainers fit properly into the air cleaner adapter.
  2. Secure the air cleaner assembly (1) onto the air cleaner adapter.
    Fig 1: Air Cleaner Assembly
    G01599031Courtesy of GENERAL MOTORS CORP.

    Important:  If the MAF/IAT sensor is installed backwards, the fuel system goes rich. An arrow (2) cast into the plastic portion of the sensor indicates proper air flow direction. The arrow must point toward the engine.

  3. Install the MAF/IAT sensor (3) to the air cleaner assembly (1).
    Fig 2: MAF/IAT Sensor & Air Cleaner Assembly
    G01599032Courtesy of GENERAL MOTORS CORP.
  4. Secure the clamps at the MAF/IAT sensor and the air cleaner assembly (1).
  5. Connect the MAF/IAT connector.
  6. Install the air intake duct (2).
  7. Tighten the clamps on the air intake duct (2) at the throttle body and at the MAF/IAT sensor.
    Fig 3: Air Intake Duct
    G01599033Courtesy of GENERAL MOTORS CORP.
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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.