Last week I got the dreaded ABS/BRAKE lights and alarm. I had AAA haul it home. Used the jumper wire to access the ABS codes and retrieved a 56. Which is a High pressure switch, low pressure switch accumulator, booster pump. My pump had been noisy for a while, especially when it was cold. It was probably just the pump, but I found a complete master cylinder with booster pump on EBay for $805 shipped with a$300 core charge. So, I went ahead and got it. A buddy helped me swap it out. 2 hours including test drive and bleeding. Everything seems to be working as it should.
In the process of bleeding the brakes with the key on, my 33 month old Interstate 24F battery died. I’ve got it on the battery charger now and will be going to get it checked and perhaps replace it.