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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 515 (FRAME AND UNDERBODY)REPAIR INSTRUCTIONSTRANSMISSION SUPPORT CROSSMEMBER 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 does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Transmission Support To Frame Mounting Bolts
    GM851495Courtesy of GENERAL MOTORS CORP.
  1. Install the transmission support crossmember to the vehicle.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the transmission support crossmember to the frame mounting bolts.
    • Tighten the bolts to 50 N.m (37 lb ft), except Cutaway.
    • Tighten the bolts to 65 N.m (48 lb ft), Cutaway.
    3. Fig 2: Transmission Mount To Transmission Support Retaining Nuts (4WD Vehicles)
    GM829718Courtesy of GENERAL MOTORS CORP.
  3. Install the transmission mount to the transmission support crossmember retaining nuts, for 4WD vehicles and tighten to 60 N.m (44 lb ft).
    4. Fig 3: Transmission Mount To Transmission Support Retaining Nut (RWD Vehicles)
    GM829715Courtesy of GENERAL MOTORS CORP.
  4. Install the transmission mount to the transmission support crossmember retaining nut, for RWD vehicles and tighten to 60 N.m (44 lb ft).
    5. Fig 4: Fuel Filter Bracket To Transmission Support Retaining Bolts
    GM829088Courtesy of GENERAL MOTORS CORP.
  5. Install the fuel filter bracket to transmission support crossmember retaining bolts and tighten to 30 N.m (22 lb ft).
    6. Fig 5: Brake Combination Valve To Transmission Support Mounting Bolt
    GM1199229Courtesy of GENERAL MOTORS CORP.
  6. Install the brake combination valve to transmission support crossmember mounting bolt and tighten to 10 N.m (89 lb in).
  7. Remove the safety stands.
  8. Lower 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.