I have a 2002 zr2 s10 with a 4.3 was climbing a hill engine light came truck started to bog down really bad then died and a burning smell from inside of cab

SOURCE: engine

possibly a plugged catalytic converter?

SOURCE: Missing and backfiring during acceleration and climbing hills.

Could be vapor lock in the fuel system. Next time it does this, stop and try removing the fuel filler cap... Hope this helps...;-)

SOURCE: getting to much gas to engine in chevy s10 blazer

You have TBI, check the two injectors for a "V" or cone style, spray pattern. There shouldn't be any dripping. Also check the TBI assembly for any leaks. The fuel pressure regulator is mount at the rear part f the TBI. If the diaphram is damaged it could cause exsesive fuel to dump into the engine.

SOURCE: shaking really bad and rumbling sounds/ really slow

i'd bet the catalytic converter is stopped up.

Testimonial: "thanks i took it to the shop i cant remember excactly whatthey said was wrong but mainly its just leaking fluid really really bad and other stuff"

SOURCE: I have a 2002 Chevy S-10 Crew cab 4wd LS. I was

p0420 is Catalyst System Efficiency Below Threshold (Bank 1) o2 sensors reading are used to check the cat if the cat is plugged you will lose power o2 sensor send a voltage signal to the computer 0 to 1 volts The o2 upstream of the cat should switch back and forth from 0 to 1 volts, average .450v if voltage stays high engine is running rich (low oxygen) if voltage stays low engine is lean (lots of oxygen) cats have a 8-year 80000-mile warranty