well to start off my truck is a 2005 D/D LLY E/C shortbox as in my sig.

i just got back from snowmobiling in wyoming (13 hr. Drive), pulled a 4 place open snowmobile trailer with 4 sleds out. had my predator set on 100 out and back, no problems on the way out.

on the way back i got a p1093 (cleared while on road wiht predator)...im assuming that i need to change my fuel filter. 6000 miles on truck. i also got a p0571 cruise/brake switch...why???

as far as fuel milage, on the way out i got between 9 and 11. on the way back i got about 11 steady. while i was in wyoming i drove from laramie to steamboat colorado and got 15 mpg with no trailer.

well let me know what you guys think

Just wondering, pulling the 4 place, loaded trailer, what were your EGT's withe the 100hp setting?
1093 is fuel related. Try the filter. Some get it with or without any tuners.
Can't help on the other code.

dont know what egt's were, it didnt blow up and still runs fine but i wasnt beatin the hell out of it either, ok well a couple times. my dad thought he would be funny and try to race me with his 99 1500 5.3..he was not pulling anything and i walked all over him

anyone else have info on p0571

the only time i have seen this code a rodent had gotten under the relay center and chewed through the brake signal wire. it will be white.