Review on ACDelco 212 559 Original Equipment Multi Purpose by Rolando Munoz

Purchased April 2016, not installed until November 2016. When I finally ordered a new connector end that connects to the relay and air valve. I installed all the details and the system worked perfectly. now, August 2017, the AIR pump turns on and off by itself. We diagnosed the problem and found that the relay periodically closes on its own. Unfortunately the 12 month warranty has expired as it is over a year old. I'm a GM tech and figured this relay would last more than 9 months of use. Don't waste your money and buy a GM OEM relay. Also agree with other comments, definitely too expensive for a simple relay.