Question about 1994 GMC Sierra
You have a pretty decent chassis under there. I can't tell you if or where it is flexing but if you look at it carefully flex will often cause paint or undercoating to crack. Worst case is you may actually have some stress cracks in the metal itself making it even more obvious. No chassis is entirely rigid but they are not really designed to be front loaded with a heavy plow.
If you do find a stress riser, I suggest you weld a section of steel extending at least a foot before and beyond the fracture. That will spread the load a bit.
One other thought...If you are running with an empty box, you could be lifting the rear wheels off the ground. if so, get some weight back there.
Posted on Jan 01, 2011
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Posted on Jan 02, 2017
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Feb 18, 2015 | 1998 GMC Sierra
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