1997 Oldsmobile Bravada ABS Light on, No AC/Heater fan, no

Electrical problem
1997 Oldsmobile Bravada 6 cyl Four Wheel Drive Automatic

My aunt has asked me to look at her 97 olds. Barvada It seems that the ABS light was coming on and for whatever reason would kill the ac/heater fan from working. It was doing this off and on at first, but now is on all the time. She has had to take the circuit breakers out for the power seats and windows due to them getting so hot you can't touch them (even when they are not in use) I would have to guess there is a dead short some where on the device side of the circuit breakers but I have no idea where to began to look for it. Any help or direction would be great.