I constantly feel and hear a pulse when breaking. Lights for the antilock brakes and traction control are always on on the...

Mine was a 2006 Pontiac torrent which is same as the Chevy equinox a mechanic diagnosed as bad brake module. They are very expensive so they suggested eBay. I bought a used one guaranteed to work my mechanic installed it and reset my computer system. It fixed the problem for about a year and then retuned with the same problem I will probably have to replace it again.