No Tow Power

[Joe Cervantes]

Looking for advice or options on why my truck doesn't have any tow power. That being said it has a 6.0 liter. It barely wanted to tow an 18 foot trailer with 2 couches on it, so I had to use my 03 Tahoe and it pulled it like nothing. Any suggestions? 

[riverbanks]

Start checking tune up items,no cel?fuel pressure test?

[Brian715]

Clogged catalytic converter

[davester]

maybe look at the fuel trims.  all kinds of things can result in the engine not working right.

[Ethan Cervantes]

Gonna check the fuel pressure today see what is has cause it also has a hard start have to prime it about 3 to 4 times for it to start