3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Engine Block Heater: Testing and Inspection
When operating, the engine block heater should make an audible sound and the adjacent parts should be warm to the touch.
The heater will operate continuously when plugged into the correct voltage electrical socket (110 volt A.C., 6.5 amp). Operate only when the ambient
temperature is below 4°C [40°F].
