GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 GMC Sierra Denali 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Suction Hose Replacement

Suction Hose Replacement LB7 w/Denso

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

    2. Object Number: 652572 Size: SH
  2. Remove the suction hose mounting bolt (3) from the A/C compressor.

    3. Discard the bolt.

  3. Remove the suction hose (1) from the compressor.

    4. Object Number: 363139 Size: SH
  4. Remove the suction hose nut from the accumulator.

    5. Discard the nut.

  5. Remove the suction hose from the accumulator.
  6. Remove the suction hose from the vehicle.
  7. Discard all of the used sealing washers. Cap the system openings.

Installation Procedure
  1. Install the suction hose to the vehicle using new sealing washers.

    2. Object Number: 363139 Size: SH
  2. Install the suction hose to the accumulator.

    3. 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.

  3. Install the NEW suction hose nut to the accumulator.

    4. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 652572 Size: SH
  4. Install the suction hose to the compressor (1).
  5. Install the NEW suction hose mounting bolt (3).

    6. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  6. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  7. Leak test the fittings of the component using the J 39400-A .

Suction Hose Replacement LR4, LM7, LQ4, L18 w/Denso

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

    2. Object Number: 628247 Size: SH
  2. Remove the suction hose mounting bolt from the A/C compressor.
  3. Remove the suction hose (2) from the A/C compressor.

    4. Object Number: 363139 Size: SH
  4. Remove the suction hose nut from the accumulator.
  5. Remove the suction hose from the accumulator.
  6. Remove the suction hose assembly from the vehicle.
  7. Discard all of the used sealing washers. Cap the system openings.

Installation Procedure
  1. Install the suction hose to the vehicle.

    2. Object Number: 363139 Size: SH
  2. Install the suction hose to the accumulator using new sealing washers.

    3. 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.

  3. Install the suction hose nut to the accumulator.

    4. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 628247 Size: SH
  4. Install the suction hose (2) to the compressor using new sealing washers.
  5. Install the suction hose mounting bolt to the A/C compressor.

    6. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  6. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  7. Leak test the fittings of the component using the J 39400-A .