Express 3500 V8-6.0L VIN U (2004)
5. Install the A/C high pressure switch snap ring using the J 5403. Ensure that the high point of the curved sides is adjacent to the switch housing.
Ensure that the snap ring is properly seated in the switch cavity retaining groove.
6. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
7. Leak test the fittings of the components using the J 39400-A.