I recently installed a 4inch lift onto my blazer an shortly after that i had to extend my rear driveshaft b/c it broke one of my u-joints. Then I installed the new driveshaft with new u-joints and it drove fine for about a month.
The problem that i have is that when it tries to shift from 1st to 2nd gear there is a loud grinding noise coming from my drive line somewhere but i'm unable to find out what the problem is. I checked all fluids and they were good.
Any help would be appreciated. Thanks