Tools Required
J 39400-A
Halogen Leak
Detector
Important: The A/C refrigerant filter, ACDelco P/N 15-1697 must be installed to
the A/C evaporator tube between the condenser and evaporator. The installation
of this A/C refrigerant filter eliminates the need for flushing.
- Remove the PCM. Refer to
Powertrain Control Module Replacement
in Engine Controls - 4.3L or
Powertrain Control Module Replacement
in Engine
Controls - 2.2L.
- Remove the engine coolant reservoir. Refer to
Coolant Recovery Reservoir Replacement
in Engine Cooling.
- Loosen the accumulator nut at the evaporator.
- Reposition the accumulator (4) in order to gain access to the evaporator
tube (1).
- Measure 100 mm (4 in) from the bend after the high side access
port and mark the location.
- Measure 50.8 mm (2 in) from the mark on the evaporator tube
(1) from the previous step.
Important: Do not allow metal burrs to enter the tube during cutting or when removing
the burrs.
- Using a tubing cutter, cut the marked section of the evaporator tube (1).
- Remove the burrs from the evaporator tube (1).
- Remove the nuts (4), the ferrules (3), and the O-rings (2) from the A/C refrigerant
filter (1).
Important: DO NOT install the O-rings (2) in this step.
- Push the nuts (4), and the ferrules (3) over each of the evaporator tube
halves.
- Install the ferrules (3) with the small end toward the nut (4).
- Install the A/C refrigerant filter (1) to the evaporator tube with
the flow arrow pointing towards the evaporator.
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.
- Install the nuts (4) to the A/C refrigerant filter (1).
Tighten
Tighten the nuts to 15 N·m (11 lb ft).
- Remove the nuts (4) from the A/C refrigerant filter (1).
- Coat the O-ring seals (3) with 525 viscosity refrigerant oil.
- Install the O-rings (3) to the evaporator tube.
- Install the nuts (4) to the A/C refrigerant filter (1).
Tighten
Tighten the nuts to 15 N·m (11 lb ft).
- Install accumulator (4) to the evaporator (3).
- Tighten the accumulator nut at the evaporator.
Tighten
Tighten the nut to 15 N·m (11 lb ft).
- Position the accumulator bracket 60 mm (2.36 in) toward the
high side access port.
- Evacuate and recharge the A/C system. Refer to
Refrigerant Recovery and Recharging
.
- Leak test the fittings component using the J 39400-A
.
- Install the engine coolant reservoir. Refer to
Coolant Recovery Reservoir Replacement
in Engine Cooling.
- Install the PCM. Refer to
Powertrain Control Module Replacement
in Engine Controls - 4.3L or
Powertrain Control Module Replacement
in Engine
Controls - 2.2L.