I just bought a 2007 Silverado z71 LT ext cab 1500, there is a 3" susp lift in the rear and a leveling kit in the front, the tires cooper discover 305's. The driver side CV was bad when i bought it, I replaced it and the new one broke the second time the truck was in 4x4. The first one was bad on the wheel side joint and the second broke on the transfer case side joint. Any idea what is causing this? Leveling kit? or could there be something wrong in the transfer case?

 

Is it a torsion bar crank? Or coil spring spacer like the new ones?

 

it has the coil spacers

 

How big of a levelin kit up front?

 

I believe its a 2"

 

Shouldn't be that big of a deal then. Look at your upper control arm and see how close you are to the stopper