Whats the best way to change the engine mount on a 2008 chev Silverado 4X4, 5.3

Replacing either engine mount (left or right side) is a very labor intensive job, involving 17-20 steps to remove & as many to replace the mount. I would not recommend doing this as a do-it-yourself project unless you are very mechanically inclined, as the engine must be lifted about 5-6" off the frame to effect repair. (You should be able to do it without lifting the vehicle itself, as there would be room to get underneath it.) If you choose to tackle this project yourself, I recommend www.alldatadiy.com, which would allow access to all the info for service and repair of your vehicle. If you choose to have it done at a repair shop, each mount should run about $100-$125; labor for the left side mount is 5 hrs (about $495); for the right side mount is 7 hrs ($695); or to do both mounts is 10 hrs ($990). We'd be happy to do it for you, and our work carries a 3 year, 36,000 mile warranty.