p0171 & p0174
 

Ok my 04 Deville check engine light is on and is pulling these 2 codes for a few months now. Car was running fine at first, but now is idling very rough when started. On first start in the morning, struggles to stay running for up to 20 minutes sometimes before it smooths out, then it runs fine??? I know theres 1000 posts about these 2 codes, but any ideas?