If you didnt know, my brother and I put an ls1 into a 94 Chevrolet.. Thought we were done but cant find freaking exhaust flanges anywhere local.. Ordered them from GMpartsdirect and fedex lost the package.. 2 weeks later they finally reordered some.. looks like another 2 weeks before we get it going.. The stock pcm was setup for 6 speed.. I redid all the tables for the 4l60e that we are running.. The truck wont shift out of 1st and It wont even shift to 2nd if I command it too with vcm scanner.. I dont have a maf on it yet and was wondering if that could be the problem.. Any of you had this problem.. Thanks in advance..