Im not sure if thats a real thing but a guy at autozone told me I may need one to fix my problem.

But I have a 99 blazer and the motor is a rebuilt one or may have come out of a different blazer Im not sure. But when I wana give it gas or try and gun it, it just bogs down and waits till it gets really high in RPMs and shifts then it kinda gos and bogs down again. Any ideas of what may be my problem?

And can anyone let me know what a thottle body kit is?

 

i would try tune up and then check maf sensor and fuel presure

 

That could be a number of things, a failing fuel pump, a bad MAF sensor, a bad TPS. Quite honestly, I probably wouldn't take the advice of people at AutoZone, they typically are parts jockeys not mechanics. I'm not as mechanically inclined as other people here, i'd wait for more advice.

As for a Throttle Body Kit, they probably are referring to a throttle body and throttle body gasket.

 

if it was a throttle body "spacer" steer clear. it's pointless on your truck.