SilveradoNewbie

I'm not using E85. I was actually going to try it but it didn't make a lot of sense economically. How did it go for you? Thanks! I actually have a fuel pressure tester so I'll try that throughout tomorrow when I start up. I'll let you know how it goes.

Hoping to get some help. The dealership has been no help. About two months ago my gas 2015 2500HD started to start kind of sluggish. Overtime it would crank longer and longer when cold. Got to the point where it was taking 5+ seconds to fire up. Went to the dealership and after $110.00 they told me my throttle body plate was loose. They guy insisted if I didn't fix it ASAP it could break off and ruin my engine. After taking it home I removed the throttle body, which was indeed loose, cleaned, tightened and put it back on. I did notice as I shook the plate there was zero carbon build up where it used to sit on that middle rod. I used that as a guide when tightening it back up. Obviously that didn't fix the problem. I'm not even 100% sure it was loose before I went to the dealership but there is more to that story. I'm still in the same place with the long cranks, however about a week ago I did find a solution to alleviate the problem. I noticed if I turned the key on then back off a couple times before I start the engine it fires up right away every time. Does anyone know what could cause this? Thanks