well ive got good and bad news...
got almost all my cel codes to go away.turned out to be the o2 sensor fuse throwing all the codes but 1.
the last is a p2626 but i cant remember what thats for. something to do with the updraft 02 sensor. im goint to try re wiring it and if that doesnt help, ill try the old sensor. no luck then, its back to the dealership for another diag. anyone feel up to helpuing me save another 90$??

 

autozone gives free code retreval, that should help you out with your p2626

 

P2626 Is an "O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1"

Sounds like either the sensor has issues, or your splices and/or wiring could be incorrect.

 

You have to ask yourself why you blew a fuse. Over-current is usually caused by shorting to ground. Did you twist the wiring on your O2 sensor when installing a downpipe? If so, you probably broke the wires and the power wire is shorting to ground. Replace O2 sensor and wire.

 

there is a fuse for the o2....?

 

In the fuse box.. abbreviated EXH. Controls multiple things, including the o2's.

 

How did the re-wiring go for you, TY8425? Hope it helped to resolve this last code for you!
Sarah
GM Customer Service

 

i rewired where i had previously this month tried wiring a turbo timer. the green wire to th o2 was broken inside the butt connector i "fixed" it with. car runs great with no lights or codes. thanks you and thanks everyone

 

Good job!