* 4.8L Vortec V8: This was a common engine choice.
* 5.3L Vortec V8: Also a frequently available engine.
* 6.0L Vortec V8: This was available, but less common than the 4.8L and 5.3L.
To know the exact engine size for a specific 2002 GMC Yukon, you'd need to check the vehicle's documentation (like the owner's manual or the sticker on the driver's side doorjamb).