Need help...just purchased 05 duramax that ran great on test drive and as soon as I purchased it on way home truck shuts down around 65mph on interstate or around 2000rpm on incline. Like its starved for fuel. Changed fuel filter first thing but I noticed mine has no sensor in bottom of it. Help pls

 

The fuel would drain out of the bottom of the fuel filter without the water sensor. Have you pumped the fuel filter to fill the filter. Old story buy no comments.

Labarn