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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSEXHAUST PRESSURE DIFFERENTIAL SENSOR PIPE 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: Identifying Exhaust Differential Pressure Sensor Pipe Assembly
    GM1862639Courtesy of GENERAL MOTORS CORP.
  1. Position and install the exhaust differential pressure sensor pipe assembly.
    2. Fig 2: View Of Exhaust Differential Pressure Sensor Bracket Bolts
    GM1862638Courtesy of GENERAL MOTORS CORP.
  2. Loosely install the exhaust differential pressure sensor bracket bolts (1).
    3. NOTE: Refer to Fastener Notice .
  3. Install the exhaust differential pressure sensor pipe assembly fittings (2).

    Tighten: 

    1. Tighten the exhaust differential pressure sensor pipe fittings to 45 N.m (33 lb ft).
    2. Tighten the exhaust differential pressure sensor bracket bolts to 9 N.m (80 lb in).

  4. Install the exhaust differential pressure sensor pipe assembly hoses to the sensor.
  5. Position the exhaust differential pressure sensor pipe assembly hose clamps (3).
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .
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.