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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1416 (Engine Control System - 4.8L, 5.3L, & 6.0L - Introduction) >> Repair Instructions >> Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.
    Fig 1: Locating Air Flow Direction On MAF/IAT Sensor
    GM359112Courtesy of GENERAL MOTORS CORP.
  1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
  2. Fig 2: View Of Intake Air Tube
    GM898123Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the MAF/IAT sensor on to the air cleaner housing.
  4. Tighten the clamp securing the MAF/IAT sensor to the air cleaner housing.

    Tighten:  Tighten the clamp to 7 N.m (62 lb in).

  5. Install the air cleaner outlet duct.
  6. Install the air cleaner outlet duct bolt.

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

  7. Tighten the clamps at the MAF/IAT sensor and the throttle body.

    Tighten:  Tighten the clamps to 7 N.m (62 lb in).

  8. Fig 3: Disconnecting/Connecting MAF/IAT Sensor Electrical Connector
    GM898340Courtesy of GENERAL MOTORS CORP.
  9. Connect the MAF/IAT electrical connector.