G 2500 3/4 Ton Van V8-6.5L DSL Turbo VIN F (1996)
Refrigerant Pressure Sensor / Switch: Locations
A/C Low Pressure Switch
The low-pressure switch is located on the low-side refrigerant line running along the engine compartment rear bulkhead, just above the evaporator case.
It is mounted on a Schrader valve, therefore, the system does not have to be discharged to remove the switch. (#13 in the illustration)
