I just now logged on like 4 months later. I parked the truck at our shop because I have my car out until this winter. The blazer was shifting 1-2 really hard. when you first hit the gas it acts like it wants to stall. I honestly have no clue whats wrong with it. Its just sort of odd how it wouldnt run untill I shook the ground thats on the firewall. I took that ground off and it ran though so I believe when I shook it it may have moved something else. I'm going to start working on it again soon and I should come to a resolution. I'll be sure to post on here what it is.

 

I doubt anyone will read this with the post being so old but the issue ended up being a connection between the tps and the harness itself. It sounds sort of silly now that I have looked at everything but the connection and it was driving me nuts. Pulled the connector apart and moved the connection prongs out and everything works great now.

 

Solutions are ALWAYS welcomed! If someone else comes across this thread while searching later on, knowing the cause of your problem will definitely help them!

Thanks for the follow up!