I have a 2003 isuzu rodeo. Sometimes it is hard to
I do not think shifting gears ,putting your car in reverse has nothing to do whit whit the abs to come on and off ,my isuzu rodeo did the same thing and it was a dirty sensor ABS on front wheels , There is a ring on the inside of the front disc's that works together with the ABS sensor to send information to the car computer when braking ,and must have a distance of about 1/8 of an inch between ring and sensor ,,they must not touch ,what happens is that over time dirt starts to build between sensor and ring ,and ring and sensor begin to touch ,and if they do touch ABS light will start be on and off while driving ,,most of the time the problem is the sensor and not necessarly a bad sensor ,,only a durty sensor and dirty ring ,a broken or loose wire also will activate the ABS light ,,,and about car hard to put into reverse ,you'll probably need a new clutch ,,good luck