blademan1972
New member
lets see I have replaced both wheel bearings and both outer tie rods and had an alignment done and replaced front 4x4 actuator and transfer case motor I have also rotated the tires ! But still have a hum coming from the front end that can be heard and felt though the floor ! I also serviced both front and rear diffs and transfer case and the fluid that came out of all 3 where dirty but no metal shavings of any kind I filtered the fluid coming out of each one to check them ! please any help would be grateful ! my next move is to replace the transfer case controller but im not having any problems with the 4x4 on the Envoy it works fine ! just trying to eliminate the noise !! Thanks Brad 