i am hoping that i can get a little help here,,i bought a 94 z28 with a bad trans.when i pulled the trans i found out it had a 95 pwm trans in it,,i put a brand new 95 4l60e trans in it..then found that it only had 3rd gear safe mode but reverse worked properly..then added the wire from u pin on trans plug to d6 on the pcm and replaced pcm with a 95 pcm turning the whole setup into a 95 ....but...after all that it shifts through all the gears flawlessly except reverse..in reverse youhave to give it gas for it to move like there is no line pressure or something..but with the 94 pcm it has reverse good...i hope i can find some help i am at wits end with this thing,,thank you