GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 38185 Spring Hose Clamp Pliers

    Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.

  1. Drain the coolant from the surge tank. Refer to Cooling System Draining and Filling .

  2. Object Number: 11675  Size: SH
  3. Remove the rubber air bleed access plug from the top of the upper radiator support.
  4. Remove the following clamps:
  5. 3.1. The bleed hose at the plenum
    3.2. The recovery reservoir hose at the radiator surge tank
    3.3. The recovery reservoir hose at the recovery reservoir
    3.4. The bleed hose at the radiator surge tank
    3.5. The radiator bleed hose at the radiator

    Object Number: 11676  Size: SH
  6. Remove the nut that retains the plenum bleed hose bracket at the evaporator case.
  7. Remove the screws that retain the hose and pipe assembly to the center wheelhouse panel.
  8. Remove the coolant hose from the vehicle.

Installation Procedure

  1. Install the hoses and clamps.
  2. Install the hose and pipe assembly and screws to the center wheelhouse panel.
  3. Tighten
    Tighten the hose and pipe screws to 2 N·m (18 lb in).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


    Object Number: 11676  Size: SH
  4. Install the nut that retains the plenum bleed hose bracket at the evaporator case.

  5. Object Number: 11675  Size: SH
  6. Install the rubber access plug on the upper radiator support.
  7. Refill the cooling system. Refer to Cooling System Draining and Filling .