First off I would like to thank anyone that can help. Three days ago I was driving around when all of a sudden my RPMs shot up real high and the transmission wouldnt shift. So I hooked up my scanner and pulled the maf sensor code and replaced the whole thing. After all that its still hesitating when i push the gas, reving real high, and lacks any stort of power. The only code im getting now is P0102. Does anyone have any idea how to fix this??

2000 S-10 Blazer 4.3