C 2500 Truck 2WD V8-454 7.4L (1988)
Fuel Module: Description and Operation
Fuel Module (Located Above Blower Motor Assembly)
On Heavy Duty models, a fuel module will override the ECM two second timer and the fuel pump will run for twenty seconds and then shut OFF if the
vehicle is not started. This circuit corrects a hot restart (vapor lock) during a high ambient temperature condition. Refer to COMPONENT
LOCATIONS/UNDERHOOD BLOCK DIAGRAM for under hood general location.
