How do you change the door hinge pins in a 1999 GMC jimmy sls?

To change the door hinge pins on a 1999 GMC Jimmy SLS, first, support the door with a jack or a helper to prevent it from falling. Remove the door panel if necessary for better access, then use a hammer and punch to drive out the old hinge pins from the hinges. Install the new hinge pins by aligning them correctly and tapping them in gently with a hammer. Finally, reattach any removed parts and check the door alignment and operation.