If it's a California truck it conforms to California emissions. Cant be sold there unless it does. As such it will have EVAP and use the TCF pump.
The TCF includes the tank pressure sensor which is needed for the EVAP tests.
The TCU does not have the pressure sensor for EVAP.
The TCF pump can be used in either application, you just don't connect the sensor.
An easy way to verify that is to use a mirror to look at the pump. If it has one wiring connector on top it is a TCU if it has 2 wiring connectors it is a TCF.
What is the issue with your pump? It sounds like you are still driving it which isn't normal for a bad pump. Usually they either work or don't.
Sunday, December 24th, 2017 AT 3:35 AM