This is on my 98 suburban. I have had problems with my A/C fan/blower for a couple years now. When the fan is turned to off it stays on low. Occasionally high will go off and not work but the other speeds will. Also when I hit a bump hard enough the fan will go off on all selections. When the a/c button is on the compressor is on even when the fan isn't blowing. I took the little module off of my 95's fan switch (since the motor is out of it and I know it works) and put it in the 98 and the fan wont work. Is there something else I need to look at?