Auxiliary Air Conditioning Evaporator Tube Replacement Suburban XL
Tools Required
J 39400-A
Halogen Leak Detector
Removal Procedure
- Recover the refrigerant from the system. Refer to
Refrigerant Recovery and Recharging
.
- Remove the auxiliary A/C evaporator tubes (3) from the condenser tube (2) and the accumulator (5).
- Loosen the right front wheelhouse to gain access to the clamp behind the wheelhouse.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Remove the right assist step. Refer to
Assist Step Replacement
.
- Remove the front wheelhouse liner. Refer to
Front Wheelhouse Liner Replacement - Right Side
.
- Remove the rear wheelhouse liner. Refer to
Rear Wheelhouse Panel Liner Replacement
.
- Remove the retaining nut (2) and the auxiliary A/C evaporator tubes (3) from the auxiliary HVAC module.
- Remove the heater/A/C tubes retaining nut (4) from the stud (1) at the frame (6).
- Remove the auxiliary A/C evaporator tubes (3) from the clamps (5).
- Remove the auxiliary A/C evaporator tubes from the vehicle.
Installation Procedure
Important: The replacement A/C and heater pipes are shipped in two sections and spliced together upon installation. Refer to
Auxiliary Heater and Air Conditioning Pipe Repair
.
- Install the auxiliary A/C evaporator tubes to the vehicle.
- Install the auxiliary A/C evaporator tubes (3) to the clamps (5).
Notice: Refer to Fastener Notice in the Preface section.
- Install the heater/A/C tubes retaining nut (4) to the stud (1) at the frame (6).
Tighten
Tighten the nut to 7 N·m (62 lb in).
- Install the auxiliary A/C evaporator tubes (2, 3) and the retaining nut to the auxiliary HVAC module.
Tighten
Tighten the nut to 16 N·m (12 lb ft).
- Lower the vehicle.
- Install the rear wheelhouse liner. Refer to
Rear Wheelhouse Panel Liner Replacement
.
- Install the right assist step. Refer to
Assist Step Replacement
.
- Install the front wheelhouse liner. Refer to
Front Wheelhouse Liner Replacement - Right Side
.
- Install the auxiliary A/C evaporator tubes (3) to the condenser tube (2) and the accumulator (5).
Tighten
Tighten the nuts to 16 N·m (12 lb ft).
- Recharge the refrigerant to the system. Refer to
Refrigerant Recovery and Recharging
.
- Leak test the fittings of the component using the
J 39400-A
.