GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
Colorado Pickup - 4WD
🢒
HVAC
🢒
Heating, Ventilation, and Air Conditioning
🢒 Air Conditioning Evaporator Thermal Expansion Valve Replacement
Special Tools
J 39400-A
Halogen Leak Detector
Removal Procedure
Recover the refrigerant. Refer to
Refrigerant Recovery and Recharging
.
Remove the nut from the TXV mounting stud.
Remove the evaporator tube and the compressor suction hose from the TXV.
Remove and discard the seal washers.
Remove the TXV bolts.
Remove the TXV.
Remove and discard the seal washers.
Installation Procedure
Install new seal washers to the evaporator core fittings. Refer to
Sealing Washer Replacement
.
Install the TXV.
Caution:
Refer to
Fastener Caution
in the Preface section.
Install the TXV bolts. Tighten the bolts to
7 N·m (62 lb in).
Install new sealing washers on the evaporator tube and the compressor suction hose fittings. Refer to
Sealing Washer Replacement
.
Install the evaporator tube and the compressor suction hose to the TXV.
Install the TXV nut. Tighten the nut to
20 N·m (15 lb ft).
Evacuate and charge the refrigerant system. Refer to
Refrigerant Recovery and Recharging
.
Leak test the fittings using the
J 39400-A
.