GM 15883410
Drier

The first step to replace the accumulator requires recovering all refrigerant from the system. Begin the accumulator replacement task by unplugging the electrical connector from the a/c pressure switch then removing the a/c low pressure switch. First disconnect the compressor suction hose assembly from the accumulator before removing the nut which retains the accumulator to the Evaporator. Before extraction of the accumulator remove the accumulator clamp nut and discard the o-ring seals from the vehicle. Add refrigerant oil to the new accumulator during its installation if it serves as an exchange. The accumulator should be installed into the accumulator clamp before tightening the clamp nut to 10 n.m (88 lb in). The technician should install the a/c low pressure switch followed by tightening it to 5 n.m (44 lb in) and then add the new o-ring seals. Apply the retaining nut to connect the accumulator to the Evaporator before tightening it to 28 n.m (21 lb ft). Anchor the compressor suction hose to the accumulator before tightening its suction hose nut to 48 n.m (35 lb ft). Close by plugging the electrical connector to the a/c low pressure switch after you evacuate and refill the a/c system through the halogen leak detector (J 39400-A) procedure.

Start the installation process of the A/C accumulator (ACDelco P/N 15-1696) by conducting leak detection using a Halogen Leak Detector (J 39400-A) to check for any gas emissions. Extract the evaporator tube from the clips located inside the cowl. Apply a mark 50 mm beyond the bend on the evaporator tube adjacent to the driver fender before moving 50.8 mm from that point. Use a tubing cutter to cut along the marked portion of the evaporator tube while making sure metal burrs avoid entering the tube during both cutting and removal processes. Take off the nuts, ferrules, and O-rings from the A/C accumulator before skipping installing the O-rings at this moment. Insert each ferrule along with its nut into the evaporator tube ends so the ferrules maintain the small end facing the nut. The installation of the A/C accumulator must commence with its attachment to the evaporator tube using the flow arrow direction as the reference. When you securely manage the evaporator tube within the accumulator, tighten the nuts using 15 N.m (11 lb ft.) torque. You should start by uninstalling the nuts which secure the accumulator before placing O-rings to the evaporator tube halves. Once installed, reinstall the nuts tightly to 15 N.m (11 lb ft). Evacuation and recharging of the system needs to be followed by a leak test on the fittings utilizing the Halogen Leak Detector (J 39400-A).

Discard the O-ring seals.

Tighten the suction hose nut to 48 N.m (35 lb ft).

Perform a leak test on the component fittings using the J 39400-A Halogen Leak Detector.

Remove the A/C low pressure switch.