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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 691 (ENGINE COOLING SYSTEM (1 OF 2))REPAIR INSTRUCTIONSCOOLANT TANK - STARTER/GENERATOR CONTROL MODULE REPLACEMENTINSTALLATION 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 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of SGCM Coolant Inlet Hose, Coolant Tank & Inlet Hose Clamp
    GM1206674Courtesy of GENERAL MOTORS CORP.
  1. Install the SGCM coolant tank (2) to the vehicle.
    2. Fig 2: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  2. Position the SGCM coolant tank in order to install the SGCM rear bolt.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the rear bolt (2) to the SGCM.

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

  4. Install the front bolt (3) to the SGCM.

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

  5. Install the bolts to the SGCM coolant tank.

    Tighten:  Tighten the bolts to 9 N.m (80 lb in).

    6. Fig 3: View Of SGCM Coolant Inlet Hose, Coolant Tank & Inlet Hose Clamp
    GM1206674Courtesy of GENERAL MOTORS CORP.
  6. Install the SGCM coolant pump inlet hose (3) to the SGCM coolant tank (2).
  7. Position the SGCM coolant pump inlet hose clamp (1) to the SGCM coolant tank (2).
    8. Fig 4: View Of SGCM, Brace & Bolts
    GM1237056Courtesy of GENERAL MOTORS CORP.
  8. Install the bolts (1) to the brace.

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

  9. Install the surge tank.
    10. Fig 5: View Of SGCM Pressure Relief Valve & Hose
    GM1237052Courtesy of GENERAL MOTORS CORP.
  10. Install the SGCM pressure relief hose to the SGCM pressure relief valve.
  11. Position the SGCM pressure relief hose clamp to the SGCM pressure relief valve.
    12. Fig 6: View Of SGCM, Coolant Tank, Hose & Clamp
    GM1206680Courtesy of GENERAL MOTORS CORP.
  12. Install the SGCM coolant tank hose (1) to the SGCM coolant tank (3).
  13. Position the SGCM coolant tank hose clamp (2) to the SGCM coolant tank (3).
    14. Fig 7: Identifying Hood Hinge Normal And Service Position Bolt Holes
    GM310799Courtesy of GENERAL MOTORS CORP.
  14. Lower the hood from the service position, perform the following:
    1. Remove the hood hinge bolts from the service position (2).
    2. Lower the hood to the normal position.
    3. Install the hood hinge bolts (1).

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

  15. Install the ground strap to the hood.
    16. NOTE: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing starter/generator control module damage.
  16. Fill the SGCM cooling system. Refer to Draining and Filling Cooling System - Starter/Generator Control Module .
RENDER: 1.0x

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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.