My check engine light came on and it was giving me this code p0157 code for bank2 sensor2 oxygen sensor low voltage so i took it in to a performance shop that tuned my tahoe before and they delete the code off ... check engine light doesnt come on but my truck is driving real diferent and shifts weird, its been a few days since i got the code deleted and it feels like i lost power it wasnt doing this before i took it in... i called them up and they said they didnt change anyting on my pcm just went in and deleted the code so i have no idea what to do now...
pls help

 

Do you still have cats?

 

he is in Michigan and they don't have emissions there or inspection so he has no cats... hahaha it says it in his sig.

Kurt tuned your Truck?? he is good he tuned a few of my cars just take it back over there and they will straighten it out for you

 

I was trying to figure out why the hell his tune allowed sensor 2 activity if he didn't have cats.......

Sounds like a tune error perhaps. Certainly doesn't explain the power loss though. The sensor 2 only moniters the cats and doesn't have any affect on how the engine runs.

 

sounds like he is having other issues.......... maybe his temp sensor is jacked.... sometimes that will pull the power I know I had an issue on my LS4 GXP with that

 

Yeah it was his place i took it to they did my stall, cam, supercharger and tune but steve tuned it.... it feels like my trans is going bad or something because its not shifting like it was before i took it in but its weird cause it happened right after they deleted the code so thats why im thinking it was from that

 

They will straighten it out for you I let them mule and crack the pcm on a few of my cars so they will get it right.

 

My check engine light came back on today an its giving me this code P2A04

 

so the check engine light went off after an hour now its driving like a beast again... weird

 

Damn man, this is just strange.