What are the best Pontiac repair shops?
RepairPal Certified shops can diagnose and repair your 2000 Pontiac Grand Prix. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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Thanks Patrick. Front and back O2 sensors were replaced almost 2 weeks ago and the OEM HVAC Compressor. I thought maybe something leaked on the sensors when replacing HVAC Compressor. I believe the cat is going bad last time replaced more than 3 years ago. So at least I have some info to discuss with the mechanic without looking like a deer in front of headlamps :-). Again thanks