ive never sanded anywhere on my frame should be grounded threw the harness and unless your filled the threaded holes with paint its ground threw every bolt hole
<p>Had that happen few years back at a fuel station in a lil town up north was 20% water messed up some stuff. They paid the bill of any truck that had probs there.</p>
<p>Should of bought a Ford lol but on a serious note just cuz its a allison doesn't mean its bulletproof ya there one of the best trans but just like anything can still have probs I've seen a few go out at 60k.</p>