Champions really don't like to work after they have been fuel fouled...... (in my experience.)

Check the coolant temp sensor just to the drivers side of the thermostat housing. If you have A/C, it's a pain to see/get to...... should be a two wire connector. Make sure everything looks good there.

 

I have replaced the coolant sensor and i also updated my first post with more information

 

I hate to say it, but you're putting crap (Duralast) parts on that truck so the fact that the part is new does not rule out the possibility of it being failed. Especially when it comes to the oxygen sensors.

 

Bosch is the O2 sensor, and i did just read a post from an old thread about these trucks not liking cheap after market sensors in key areas, cam crank ect..

 

You can add Bosh 02's to the list also, They don't last long. For 02's get NTK for sensors you cant go wrong with Delphi. Plugs stick with autolites. i have seen many posts on part brands and these seem to be the best. At least in my opinion, It's what i use in my trucks.