Battery
 

96 Blazer battery has been replaced in the past 2 months. New one has died to. Had to keep jumping off the other one and now this one. Drove it one day died 2 days later. Could be other issue?

Have you had the battery checked? Is it under warranty? If it is otherwise good and able to hold a charge, then you likely have a current drain.

Nothing about the alternator?

I'd suspect that something is draining it and the first thing to check is the alternator. Is the alternator warm while it's just sitting? How big of a spark do you get when you connect your battery? I know it's had to compare that spark with what's normal but you'll need to start somewhere and after a few you'll know what's excessive on sight. Do you have a tester that can test milliamps for draw?

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Good bet is it's what's called a parasitic battery drain. When you shut a car off there is still a little battery drain due to large or small shorts, etc. Fuses have 2 little spots on them you can check a volt meter to, or check for ohms showing a ground. On my Blazer I found 10, fixed 4 or 5, but one drain is on the main computer. I had a battery shutoff switch and was using that, the garage said no need, killed off a 20 month old battery which I thought was due to age of the battery. Today the new battery may be dead, wasn't using the battery shutoff switch, will need to now. This forum can tell you more, also other info online.