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When you change it order a C5 axle. They are stronger than the C6 and a direct replacement. I would use a GM part only myself, although others seem to claim that some jobber ones are ok.
Avoid wheel hop which is what usually breaks these.
Tell us more - meaning, are you running at the drag strip, using drag radials, getting wheel hop, or any other thing to note?
I know my 2011 Grand Sport has a ZR1 half shaft on the driver's side (apparently only certain ones that had the F55 suspension option got the ZR1 shaft from the factory...), so that may also be an option to consider.
When you change it order a C5 axle. They are stronger than the C6 and a direct replacement. I would use a GM part only myself, although others seem to claim that some jobber ones are ok.
Avoid wheel hop which is what usually breaks these.
2010 is different than a C5. I think it changed in 2009.