How do you install universal joints for 1999 gmc suburban?

To install universal joints on a 1999 GMC Suburban, first lift the vehicle and secure it on jack stands for safety. Remove the driveshaft by unbolting it from the differential and the transmission, then take it to a workbench. Use a U-joint removal tool to press out the old joints and press in the new ones, ensuring they are properly aligned. Reinstall the driveshaft by reversing the removal process, making sure to torque the bolts to the manufacturer's specifications.