Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
HelloCustomer the p0411 and the p2431 are both related to the secondary air injection pump. The P0651 pertains to a loss of the 5 volt reference to several sensors. It is unrelated to the other 2 codes and may or may not be a current issue. Air pumps are problematic and usually blow the fuse when the hoses fill up with moisture and short out the air pump. This is the direction you should start with. Look for moisture in the air pump hoses, the check for blown fuses.
Your JA Expert,