Blower motor

I HAVE A 2002 SLS 85000 MILES, JUST HAD THE TRANSMISSION REPLACED 3 DAYS AGO, AND UPON RETURN I FOUND THE HEAT ADN THE AIR WAS NOT BLOWING IN THE FRONT. IT WILL WORK IN THE BACK UNIT, WHEN I HIT THE AUTO BUTTON I CAN HEAR IT CYCLING THROUGH THE MOTIONS. I HAVE CHECKED THE FUSE BOX UNDER THE REAR SEAT. I DONT KNOW WHERE THE RELAYS ARE LOCATED AND THE BLOWER MOTER IS. CAN I REPLACE THE BLOWER MOTOR MYSELF AND IF YES WHERE IS IT LOCATED AND THE RELAYS?



THANK YOU D :D