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HOMESERVICE MANUALSCHEVROLET2012CHEVY EXPRESS G2500, VAN PASSENGER, 4.8L ENG VIN AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 996 (ENGINE CONTROLS AND FUEL - 4.8L, 5.3L, 6.0L, 6.2L, OR 7.0L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSAIR CLEANER ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN A

Installation Procedure

2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN ASECTION Installation Procedure
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: If the MAF/IAT sensor is installed backwards, the fuel system goes rich. An arrow cast into the plastic portion of the sensor indicates proper air flow direction. The arrow must point toward the engine.
    Fig 1: View Of MAF/IAT Sensor Adapter & Clamp
    GM1703691Courtesy of GENERAL MOTORS CORP.
  1. If the air cleaner assembly was replaced proceed to the following step otherwise proceed to step 5.
  2. Install the MAF/IAT sensor adapter clamp to the air cleaner assembly.
  3. Install the MAF/IAT sensor
    4. NOTE: Refer to Fastener Notice .
  4. Tighten the MAF/IAT sensor adapter clamp.

    Tighten:  Tighten the clamp to 4 N.m (35 lb in).

    5. Fig 2: View Of Air Cleaner Assembly & Mounting Components
    GM1707477Courtesy of GENERAL MOTORS CORP.
  5. Install the air cleaner assembly.
    1. Insert the locator (1) on the right rear of the air cleaner into the inboard side of the slot in the adapter bracket.
    2. Slide the air cleaner towards the fender to engage the adapter.
    3. Push down on the air cleaner in order to install the retainers (2) into the adapter bracket.
    6. Fig 3: View Of Throttle Body Heater Hose & Retainers
    GM1703498Courtesy of GENERAL MOTORS CORP.
  6. Connect the engine wiring harness electrical connector (2) to the MAF/IAT sensor.
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
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.