Hey guys just an update, taking it to a guy that specializes in domestic cars and has all of the GM specific computers, scope, tech II, ECT. As far as my other mechanic he said it would need a valve job, so im going to get a second opinion. Coils have been checked out and according to him there fine (replaced and tested). So im keeping my fingers crossed.

 

Here is a very informative article on misfires. Engine Misfire Diagnosis

If the misfire is random (jumps cylinder to cylinder) it could be an EGR problem or a vacuum leak.

 

Hey guys. So the final dignosis is...................(Drum Roll)......Bad connection from the coil packs to the ICM. Connection pins were cleaned, re-torqued, and the coils were tightened down and now she runs perfect. Thanks for all the help guys

 

Glad to hear you got it figured out and fixed. Thanks for letting us know.