2003Trailblazer LS
 

:icon_headbang:My Chevy started sputtering when I came to a stop sign while the truck has been running for atleast around 2o minutes and during slow take off I'm getting slight hesitation but once I give it gas it runs like a rocket, it also will sputter "hesitate slightly" if I let totally let off the gas on a straight away and touch the pedal real easy but when I push it it's fine! I changed the coil packs ,gas filter , and plugs and now I'm putting it on a smoke machine to see if there are any Co2 leaks to be found since someone suggested to check this out. If anyone can offer any advice FEEL FREE!!!

Old post and prolly long gone but for future reference...this is likely a dirty throttle body that was causing these issues.