Chevrolet Repair: Heated seats/climate control, chevy garage, heating elements

Question
I have a 2006 trailblazer LT loaded.
My seat bottom's stopped heating up on both seats and just recently the upper vents stopped blowing air. I have never noticed the upper vents not blowing air weather it is hot or cold outside.
Someone said the heated seats are part of the climate control and it needs to be reprogrammed. Is this true. My extended warranty ended in March.

Thank You
Dave

Answer
HI DAVID,THIS IS NOT A EASY QUESTION,THERE ARE A FEW THINGS IT COULD BE,HEATER UNIT CONTROL HEAD,[ON DASH FACE] BCM, NEEDING TO BE FLASHED [RELEARNED] MODULE UNDER DRIVERS SEAT COULD BE BAD. THE FACT THAT BOTH SEATS ARE NOT HEATING I SUSPECT ELECTRICAL ISSUE'S,SUCH AS ABOVE..THE HEATING ELEMENTS DO GO BAD BUT NOT ALL AT ONCE.
MY ADVISE TO YOU WOULD BE TO TAKE THIS TO A CHEVY GARAGE OR A SHOP THAT HAS THE GM TECH TOOL TO PROPERLY SCAN THIS SYSTEM. YOU DO NOT WANT TO CHASE YOUR TAIL ON THIS ONE. I HOPE THIS HELPS YOU. PLEASE WHEN YOU LEAVE THIS SITE,WOULD YOU RATE MY ANSWER.THANK YOU AND GOOD LUCK..