Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
I am sorry your having this problem
it is just one code set for bank1 lean NO bank 2 lean codes ?
and no vacuum leaks on that side of the engine ?
if there are NO vacuum leaks and it is just bank1 doing this then this issue is a bad O2 sensor bank 1 sensor 1 OR there is an issue with the fuel injectors for that bank of cylinders
since it is just that bank 1 and it only has one cat converter it can not be the cat or a fuel pressure issue