Raycobiker,
Are you from Jax?
I'm no engineer by no means, but I do question why the lower control arm is made from cast iron instead of high grade steel. I also understand the axles are cast iron. I know steel will bend, and cast iron justs snaps when over stressed, or casting are poor.
All the trucks I have ever owned have had steel upper and lower control arms. I'm not sure about the knuckles, they could have been cast iron.
Have you ever seen an accident involving a car where the wheel has been hit and pushed back? Cars have steel lower and upper control arms and they bend. If they had cast iron, they would probably snap off too.
The H2 in Jax., according to the owner,it just broke. Service manager said,"knowing the owner, it probably happened just like he said, travelling about 15 mph and the wheel came off".
ONLY the owner knows for sure.
Maybe one of the engineers will jump in and explain why they would use cast iron instead of steel. I'm sure GM has some answers.
Buddy
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