New to tuning any efi vehichle let alone gm ....bought a 02 trailblazer ls 4.2 with 220k on it jan 1 19 and me being raised in this environment of being mechanically enclined at everything put in my path i new n could feel vehichle wasnt operating at full potentional so i started replacing #ALL SENSORS...and it started getting shit%y gas mileage so wen i would be hauling 5 or 6klbs of timber it was killin my pocket so i ordered a jet dst 14005 first read came bck as 11 chevy silverado 1500 ecm n tcm. Since then ive crashed compiter from to mny constant flashing. So i ordered tune from pmcof nc core program n kept my so called brickrd pcm wen i rd the pmc comp with my jet dst it came bck as same and i couldnt see the changes physicalky with dst do to no info support so i upgraded to hp tuners mpvi2 pro feature with prolink and have the aem wide eugo controller kit... I did first read on my tn with hp tuners n idk how but it came back as a 2010 comaro ss tune read...so i purchased ceedits for vehichle n wat do u kno the 8 thst come with hp tuners idk werethey are or hot to use them i have bought 9 universal credits n have my original bricked pcm vehichle loaded with 5 credits n my pcmofnc comp got vvrhichle specific universal credits of 2 each so hoe do i use the vcm to rewrite these to my vehucle n i got a good tune i like but wot and tcc full lock up is given me trouble im learning for boost that is being built. Due out jsn 2020 banging strait6BOOSTED TB so if anyone would lile to be part the bandwagon its greatly appreciared 1 hand washes the other