No reverse after rebuild on 4L60E Transmission from 1995 GMC Sono

i have a 1992 chevy silverado 4x4 stepside truck and when in forward it shifts perfect, but has no reverse at all, when i put it in reverse its like i have it in neutral, has no leaks or and other problems that i know of,,,,,, i have been told that on the 700r4 trannies, the low gear and reverse work off the same clutch, so why is it that it shifts and works fine in forward but no reverse??? the truck has a 3.4l v6 with auto tranny, and 4wd works fine as well, any help will be greatly appreciated,,,,, one more thing, can i replace that 700r4 with a different tranny, is there a better tranny that'll replace it?????????? i have a 1992 chevy silverado 4x4 stepside truck and when in forward it shifts perfect, but has no reverse at all, when i put it in reverse its like i have it in neutral, has no leaks or and other problems that i know of,,,,,, i have been told that on the 700r4 trannies, the low gear and reverse work off the same clutch, so why is it that it shifts and works fine in forward but no reverse??? the truck has a 3.4l v6 with auto tranny, and 4wd works fine as well, any help will be greatly appreciated,,,,, one more thing, can i replace that 700r4 with a different tranny, is there a better tranny that'll replace it??????????

engine rebuild for 2000 gmc sonoma 2.2 liter engine engine rebuild for 2000 gmc sonoma 2.2 liter engine

engine rebuild for 2000 gmc sonoma 2.2 liter engine engine rebuild for 2000 gmc sonoma 2.2 liter engine