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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 621 (ENGINE CONTROLS - 3.6L (LY7) (INTRODUCTION))REPAIR INSTRUCTIONSAIR CLEANER INTAKE DUCT REPLACEMENTREMOVAL PROCEDURE
1998 Chevrolet Suburban K2500, 7.4 J, Part Time

Removal Procedure

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Removal Procedure
WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Intake Air Duct
    GM1404636Courtesy of GENERAL MOTORS CORP.
  1. Loosen the intake air duct clamps.
  2. Disconnect the positive crankcase ventilation (PCV) tube from the air intake duct.
  3. Remove the air intake duct from the throttle body and the mass air flow (MAF) sensor.
  4. Remove the air intake duct.
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.