GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 38185 Hose Clamp Pliers

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Remove the hose clamps from the heater inlet and outlet using the J 38185 .
  3. Remove the auxiliary heater pipes from the heater inlet and outlet.
  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
  5. Remove the hose clamps from the auxiliary heater core using the J 38185 .

  6. Object Number: 791377  Size: SH
  7. Remove the auxiliary heater pipes (2, 3) from the auxiliary heater core.

  8. Object Number: 791379  Size: SH
  9. Remove the auxiliary heater pipe retaining nut (1, 4).
  10. Remove the auxiliary heater pipes.

Installation Procedure

  1. Install the auxiliary heater pipes.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 791379  Size: SH
  3. Install the auxiliary heater pipe retaining nuts (1, 4).
  4. Tighten
    Tighten the nuts to 11 N·m (97 lb in).


    Object Number: 791377  Size: SH
  5. Install the auxiliary heater pipes (2, 3) to the auxiliary heater core.
  6. Install the hose clamps to the auxiliary heater core using the J 38185 .
  7. Lower the vehicle. Refer to Lifting and Jacking the Vehicle.
  8. Install the auxiliary heater pipes to the heater inlet and outlet.
  9. Install the hose clamps to the heater inlet and outlet using the J 38185 .
  10. Fill the cooling system. Refer to Cooling System Draining and Filling.