I bought my HO from a guy with 10k on it, registered in NV. I thought it was the coolest thing, but after bombing for over 1.5 years, I've come to realize that it doesn't really matter what motor you have. The SO trucks respond very well, if not better than the HO's to power enhancements.

 

Well, either way, my 8th VIN # is a C, so it is the HO, so that puts that to rest. I am concerned however(after reading SO MANY horror stories) about the LP. I mean, what gives? Is there an actual cure? Is it for the 02 and earlier trucks? I was reading alot of the people that are having problems with the lift pump were 01's, 00's, etc....but then I read one where an 04 had problems. So, can anyone give me the low down on this. I printed up a nice thread from here on the the board about it, but was wondering if the 03 has the same problems. Is it a shot in the dark, or all the trucks having LP problems? Thanks!

 

Well, mine has never had a LP problem, and neither have my friends, but I recall reading a thread that seemed to suggest the LPs tend to go south more often for people in Canada. Don't know if it is something about the cold, or something in the fuel.

From what I understand, if the LP on an 03 and newer common rail engine goes out, it won't run... so hopefully you won't have the LP fail and the truck continues to run but the injection pump doesn't get enough fuel to cool and lubricate...

Anyhow, I wouldn't really worry about it.

 

My 03 auto is an HO, look on the right side of the valva cover, It will read HO/305 which is 305 hp.