BernTheMars

I have a 2016 Silverado Z71 with the 8l90e trans. Ever since i got it, there has been a little bit of clunk going into gear from park. No biggie. However, I recently installed a SuperLift 3.5" kit and had the battery disconnected for about 8 days. When i turned on the truck finally, i noticed that the temperature was wrong and the compass needed calibration so i drove it and it sorted itself out. Truck rides great. No vibration and no weird noises EXCEPT for the fact that i now get hard clunks going into reverse 8 times out of 10. I have narrowed it down to either the transfer case or the transmission itself. Could the transmission programming have been altered? Its had a dead battery before but have not experienced this issue before. Like i said before there are no vibrations, clunks, or noises while driving at all, just when shifting from park. Anyone have any idea what could be going on?

I ordered the 3.5 control arm kit a while back for my 2017 and finally got around to putting it on. The first issue I came across what that the ball joint didnt leave enough space for the cotter pin once the nut was tightened. I called superlift and was told to use the factory nut. Ok no biggie. Moving on the the diff spacer. I put the spacers in (2 thin ones in the rear and 2 thick ones in the front) and once tightened down, the bushings are at on odd angle. I tightened the rear mount first as stated in the instructions. If this is normal, then its fine, but im here today to ask you guys if thats okay. I appreciate any info on this issue (or non-issue). Also the kit came with these two bearings that are not mentioned in the instructions.