I can be driving around and both the ABS (yellow) and Brake (red) just come on in my Suburban. When I start the car the next time they have turned off. This occurs maybe twice a month, and in summer and winter.
Occasionally the ABS and red Brake idiot lights come on in my truck. on 2001 Chevrolet Suburban 1500
There is a fault in the Anti-Lock brakes system. Have the ABS module scanned for codes.
It's not unusual for the ABS Module to be the cause of this problem.