In this video I go over the steps and procedures necessary to replace the pinion seal on a GM truck or SUV. I go over the steps and procedures necessary to replace the pinion seal on a GM truck or SUV. it is very important to properly torque the pinion nut as the nut applies preload to the bearings inside the differential. Too much preload can cause premature failure of the bearings as well as two little preload. Below are links and descriptions are used in this video. Make sure to check them out. If you have any questions or comments feel free to leave something in the comment section. Thank you for watching