I have a 2003 Envoy XL 4.2 I-6 with 4wd. I am pulling the engine and I have everything removed accessory-wise. I now know I need to jack it up and remove the wheels in order to undbolt the suspension. I am wanting to know if I have to loosen the 30mm nut in the center of the wheel to remove the cv axle?.. I have seen people replace cv axles and that has to be unbolted but since I'm not replacing just need to remove from oil pain. Would it be possible to take the ball joint loose and allow the suspension to move out far enough to pull the cv axle out of the oil pan without removing the big nut and fully removing everything?... Also, is it possible to pull the engine and front differential together or does the front differential hve to be removed before the engina can be pulled?... Help please.