2005 Chevrolet Colorado body & structure problems

I have a 2005 chevrolet colorado 4x4 truck. I was getting over in left hand lane to avoid a truck and trailer that had stopped about 4 car lengths ahead of me when the front passenger tire snapped off the spindle and sent the truck down into the road. The hole tire snapped off and flew by the window taking the mirror and door handle with it. The tire was not flat and still had lugnuts fully locked on it when I picked it up off the other side of the road.

I bought a colorado in july of 2006 and really love the truck, but I have had a problem with the rear door not latching on the passenger side of the truck and also the seals around both sides of the doors on the truck. I have taken the truck to todd wenzel in hudsonville, mi at least 4 different times and once to kool chevrolet in grand rapids and they have never been able to fix the problem.