From everything I have seen, the new Blazer doesn't have a Start Stop disable button. Some GM vehicles do, some don't. There are aftermarket companies that make Start Stop modules that plug in to disable the start stop system. Has anyone had any experience with the module yet?
People have been using these kinds of bypass systems for years on GM products, and I've never heard of any mechanical/electrical issues as a result. If its plug and play it wouldn't be all that involved to remove prior to warranty work either.