i recently read an article on the web about the cab/chassis trucks have a factory frame rail mounted lift pump i am just curious to know wether the 2500hd and 3500hd trucks have the same wiring harness that includes the plug for this or if it would even be worth the time to install one of these just for the time being until i can do the fass setup cause i can purchase one of the replacement pumps for cab/chassis relatively cheap thanks for you guys input

 

My understanding is no for the wiring plug option. The Fass 150g set up for this truck uses a constant power source to the fuse box/battery and a secondary power source that is tied into a key activated power fuse. I would think that Fass would know about an easier quick plug if there was one available. Hope this helps!