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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 407 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSENGINE OIL COOLER HOSE/PIPE REPLACEMENT (2WD)INSTALLATION PROCEDURE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Installation Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Installation Procedure
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: A distinct snap should be heard when assembling the tube ends of the hose assembly to quick connectors. To ensure the tube is fully inserted into the connector, check by giving the tube a forceful pull.
  1. If equipped with a 8.1L engine, perform the following:
    1. Remove the oil cooler hose assembly.
    2. Connect the quick connect fittings (1) at the engine.
      3. NOTE: Refer to Fastener Notice in Cautions and Notices.
    3. Install the oil cooler hose bracket bolt.

      Tighten:  Tighten the bolt to 50 N.m (37 lb ft).

    2. Fig 1: View Of Oil Cooler Hose Quick Connect Fittings (8.1L)
    GM721991Courtesy of GENERAL MOTORS CORP.
  2. If equipped with a 5.3L, or 6.0L engine, perform the following:
    1. Install the oil cooler hose assembly and a new gasket.
    2. Install the oil cooler hose adapter bolts (2).

      Tighten:  Tighten the bolts to 12 N.m (106 lb in).

    3. Install the oil cooler hose bracket bolt (1).

      Tighten:  Tighten the bolt to 25 N.m (18 lb ft).

    3. Fig 2: View Of Oil Cooler Hose Bracket Bolt & Adapter Bolts
    GM688324Courtesy of GENERAL MOTORS CORP.
  3. If equipped, install the engine shield.
  4. Install the engine shield bolts.

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

    5. Fig 3: View Of Engine Protection Shield
    GM349061Courtesy of GENERAL MOTORS CORP.
  5. Lower the vehicle.
  6. If equipped with a 5.3L, or 6.0L engine, perform the following:
    1. Install the oil cooler hoses to the hose clip on the fan shroud.
    2. Snap the oil cooler hose clip shut.
    7. Fig 4: View Of Engine Oil Cooler Quick Connect Fittings (5.3L & 6.0L)
    GM367011Courtesy of GENERAL MOTORS CORP.
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.