I'm getting a really choppy low RPM drive. If I'm above 2-2.5k rpm it runs okay but as soon as it drops under 2.5k it starts to run very choppy and loses power and Boggs in and out of power regardless of how much throttle input I give it.

I had a tune up done last year and a recent oil change, I'm not very truck/car savvy and was hoping to get some feedback from ppl who have same truck or who have had similar issues.

Where should I start?

 

I would find someone with a code scanner and see if there are any codes set. You have an ODB-II qcontrol system and they are pretty intelligent.. In other words your truck's computer may well tell you what is wrong..

Do you have a check engine or service engine soon light?