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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Tahoe 4WD - RHD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Evaporator Tube Replacement

Evaporator Tube Replacement w/Auxiliary A/C

Removal Procedure

    Object Number: 294068 Size: SH
  1. Evacuate the A/C system. Refer to Refrigerant Recovery and Recycling, Adding Oil, Evacuating and Recharging Procedures, HVAC With A/C Manual, 1999 C/K Service Manual.

    2. Important: Cap or plug all of the open connections in order to prevent contamination.

  2. Disconnect the evaporator tube at the evaporator tube extension.
  3. Disconnect the auxiliary evaporator tube at the evaporator tube extension.
  4. Disconnect the evaporator tube extension at the condenser.

    5. Object Number: 294070 Size: SH
  5. Disconnect the evaporator tube at the evaporator.
  6. Remove the screws from the evaporator tube clips on the radiator shroud.

    7. Remove the following components from the vehicle:

    • The evaporator tube
    • The evaporator tube extension
  7. Remove the O-ring seals from the ends of the evaporator tubes.

Installation Procedure

    Object Number: 282359 Size: SH
  1. Install new O-ring seals into the ends of the evaporator tubes.

    2. Coat the O-ring seals with 525 viscosity refrigerant oil.

  2. Install the following components into the vehicle:
    3. • The evaporator tube
    • The evaporator tube extension
  3. Connect the evaporator tube to the evaporator tube extension.

    4. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).

  4. Connect the evaporator tube extension to the condenser.

    5. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).

  5. Connect the auxiliary evaporator tube to the evaporator tube extension.

    6. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).


    Object Number: 294070 Size: SH
  6. Connect the evaporator tube to the evaporator.

    7. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).

  7. Install the evaporator tube screws to the evaporator tube clips on the radiator shroud.
  8. Recharge the A/C system. Refer to Refrigerant Recovery and Recycling, Adding Oil, Evacuating and Recharging Procedures, HVAC with A/C Manual, in the 1999 C/K Service Manual.
  9. Inspect the system for leaks. Refer to Leak Testing, HVAC With A/C Manual, in the 1999 C/K Service Manual.

Evaporator Tube Replacement w/o/Auxiliary A/C

Removal Procedure

    Object Number: 294026 Size: SH
  1. Evacuate the A/C system. Refer to Refrigerant Recovery and Recycling, Adding Oil, Evacuating and Recharging Procedures, HVAC with A/C Manual, in the 1999 C/K Service Manual.

    2. Important: Cap or plug all of the open connections in order to prevent contamination.

  2. Disconnect the evaporator tube at the evaporator.
  3. Disconnect the evaporator tube at the condenser.
  4. Remove the screws from the evaporator tube clips on the radiator shroud.
  5. Remove the evaporator tube from the vehicle.
  6. Remove the O-ring seals from each end of the evaporator tube.

Installation Procedure

    Object Number: 294026 Size: SH
  1. Install new O-ring seals into the ends of the evaporator tube.

    2. Coat the O-ring seals with 525 viscosity refrigerant oil.

  2. Install the evaporator tube into the vehicle.
  3. Connect the evaporator tube to the condenser.

    4. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).

  4. Connect the evaporator tube to the evaporator.

    5. Tighten
    Tighten the fitting to 27.5 N·m (21 lb ft).

  5. Install the evaporator tube screws to the evaporator tube clips on the radiator shroud.
  6. Recharge the A/C system. Refer to Refrigerant Recovery and Recycling, Adding Oil, Evacuating and Recharging Procedures, HVAC with A/C Manual, in the 1999 C/K Service Manual.
  7. Inspect the system for leaks. Refer to Leak Testing, HVAC with A/C Manual, in the 1999 C/K Service Manual.