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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSMANIFOLD ABSOLUTE PRESSURE SENSOR REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of MAP Sensor & Bolt
    GM1876319Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW MAP sensor seal to the MAP sensor, if necessary.
  2. Install the MAP sensor (2) to the upper intake manifold.
    3. NOTE: Refer to Fastener Notice .
  3. Install the MAP sensor bolt (1).

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

    4. Fig 2: Identifying Manifold Absolute Pressure Sensor Components
    GM1934568Courtesy of GENERAL MOTORS CORP.
  4. Connect the engine wiring harness electrical connector (4) to the MAP sensor (7).
  5. Install the engine cover. Refer to Engine Cover 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.