07 gmc sierra 2 wd 4.3 vortex

[Ashley h]

I have tried every little bitty thing to change in the spark plugs changing the wires changing my spider injector checking all of my like my MAF sensor my you name it I've tested it whenever I start my truck and put it in drive it balls down changed my mass air flow sensor still no matter what I do as soon as I go to put it in drive and accelerate it balls out of the football bowl it makes a weird noise it's loud mainly cuz I think I have an aftermarket air mass air flow but it will not go up hills I mean sometimes it will but it's very slow it's got multiple misfires it says but it's only misfiring on one side the side with bank too

[silveradosid]

you could have a plugged cat, try removing the o2 sensor on bank 2 and see if it has more power