Review on ACDelco 12638266 Original Equipment Camshaft by John Castle

Worked like a champ. Fixed unstable start under load. Had to be replaced due to codes P0010 and P0011 on a 2013 Chevrolet Malibu. I was going to buy setting magnets at first but decided on these instead. I'm glad I did as it was a lot cheaper. But be aware that the bolt holding it is an absolute pain in the butt to get there. If you have a 10mm ratchet wrench this should help.