Brake Antilock Wheel Speed Sensor problems of the 2011 Chevrolet Impala

Dec 2013 vehicle hit pot hole while braking at approaching intersection, after that warning lights started flashing abs brakes/tract control/stab control, I was unable to brake, then shut down. Since then temp gauge went bad n was replaced. The 3 above dash warning lights continued intermittently, worse when it rained. At take offs n turns car would jar n abs brake system would pulsate(grabs). Hub/speed sensor was replaced, this did not help. Accessory outlets, when contained w a charger, doesn't maintain contact w power source (such as disconnection/loose connection), causing power surge resulting in 2 iphones to have bad aux ports. May 2014 blower motor started intermittently not working for seconds, then minutes until today sept 6th, 2014 when something under-dash (near blower motor) overheated filling car with smoke, then car shut down while moving once again, car smells awful from the burning! car has been a lemon and not covered under power train! seems like auxiliary elect fuse box(passenger rt foot board), and harness is shot as well as whichever harness is sending power to speed sensor, among many other things I could not mention (problems/defects) due to so many other issues w this 2011 Impala which is now worth 7000 as trade at chevy, I paid 13500 on oct14, 2014! I've checked several ground connects n they seem okay.