Hi,
im having a hard time pin pointing a noise that I'm hearing from underneath my truck ( 2011 Silverado 4.3). When I'm in low rpms and slowly accelerate I hear a grinding noise. Also when I shift from reverse to drive or from drive to reverse the truck make a clunking noise. I've beeen reading online that it could be needle bearings, but I'm not to sure. Also makes bringing noise in reverse when I slowly accelerate. Any ideas of what it could be?