Tranny Valve Body?
 

So my blazer is throwing a P1870 code, basically the tranny vavle body is bad, hard 1-2 shift, now my question is does anyone know where I can order a replacement valve body? I have searched and am coming up with nothing, any help would be greatly appreciated!

How can nobody know an answer to this?

you can try eatmyshift.com or try your local trans shop.

You can refurb your valve body yourself. Give google a whirl for P1870. Sonnax makes the reamers and the kit. There also are some kits on eBay that are called super code buster kits which have all of the parts to fully update your valve body.

Where have you looked for a replacement valve body? Trans shops and even some of your chain parts stores should be able to get you a new valve body.