LLY OS question
Ross or Paul, any clues why GM didn't replace the 04 LLY 15141668 OS with the 15228758 OS? As near as I can tell, everything is the same in the 04 LLY and 05 trucks, so there must have been some reason why GM wrote three new OSes for the 05 trucks. My 04 seems to be running fine on a 15228758 05 OS.
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