mr98z71
I'm Awesome
I have recently re geared my rear and front diffs to 4.88's and put a 6" lift kit on my truck. I am very happy on how they turned out (patterns, backlash and preloads were to spec). Now that winter hit, I have been using 4x4 quite a bit. I noticed this very weird hum and vibration which is only there while in 4x4 going above 45 mph and when I let off the throttle. Any suggestions on what this may be? I sure hope it's only a u-joint but I'm starting to lean more towards the front diff since it is only apparent while letting off the gas. If anybody has any suggestions on what it may be or any tips, that would be greatly appreciated!