Chevrolet Repair: fan blower relay, chevy store, fuse box

Question
Have Chev 2003 Trailblazer. Can't locate hvac blower motor relay. Can you help? Thank you very much . . .Joe

Answer
HI JOE,I WILL ASSUME YOU HAVE LOOKED IN THE FUSE BOX UNDER THE DASH AND FUSE AND RELAY BOX UNDER HOOD,,YES..IF THE RELAY IS NOT THERE YOU HAVE WHAT IS CALLED A BLOWER MOTOR PROCESSOR.
THIS IS A SMALL LIKE MODULE UNIT..THIS IS USUALLY LOCATED UNDER THE PASS SIDE OF DASH NEXT TO THE BLOWER MOTOR. WONT TURN ON ????YOU SHOULD CALL YOUR CHEVY STORE AND GIVE THEM THE LAST 8  DIGITS OF YOUR VIN# AND THEY WILL TELL YOU WHAT THIS CAR HAS..GM SWITCHED OVER TO THESE PROCESSORS IN MID YEAR 03 [I THINK] I AM NOT AT WORK SO I CAN NOT LOOK THIS UP FOR YOU,BUT YOUR CHEVY STORE CAN..HOPE THIS HELPS YOU, LET ME KNOW IF YOU NEED MORE INFO,,TOM...