Can mdk68gto suggests some repair shops that will fix my Monte Carlo SS 2002 wit the obd code reading p0650?

I have an 2002 Monte Carlo SS with a obd of p0650!I know whats goin on as far as the code but I dnt no where I can get the problem fixed without haveing to go to the dealer and get ripped off?Do anyone have any suggestions or can anyone on this site fix it 4 me!Please get back with me asap my car wont p the emissions test without getting this problem fixed!!