NHTSA Complaint #10172969 — 2004 CHEVROLET TRAILBLAZER

2004 CHEVROLET TRAILBLAZER. THE VEHICLE'S A/C AIR OUTPUT WORKS FINE, BUT WHEN YOU SWITCH IT TO HEAT, THE OUTPUT FOR THIS IS DIMINISHED CONSIDERABLY. THE VEHICLE HEATS UP FINE, BUT EVEN WHEN THE AIRFLOW IS ENTIRELY AT THE DASH (NONE DIRECTED TO THE FLOORBOARD) THE OUTPUT OF AIR FOR THE HEAT IS VERY LOW; SO LOW IT CAN'T EVEN BE FELT UNLESS THE HAND IS PLACED DIRECTLY IN FRONT OF THE VENT NO MATTER HOW HIGH THE SETTING IS. VEH HAS BEEN TAKEN BACK TO THE DEALER (UNDER WARRANTY), AND WAS TOLD NO DIAGNOSTIC PROBLEM WAS DETECTED; EVERYTHING IS WORKING PROPERLY. COMPARED MY VEHICLE TO OTHERS OF SIMILAR MAKE/MODEL/YEAR, AND DEALER SAYS ALL WORK THE SAME. THIS IS NOT TRUE BECAUSE LAST YEAR, I COULD NOT STAND THE HEAT ON SETTING OF MORE THAN TWO BECAUSE THE OUTPUT WAS VERY GOOD. NOW, IT CAN BE PUT AT A HIGHER SETTING, BUT WITH LITTLE HEAT OUTPUT. I COMMUNICATED WITH AN INTERNET SERVICE TECHNICIAN WHO SAYS IT IS THE AIR FLOW DOOR THAT IS NOT SEALING PROPERLY. THE INTERNET SERVICE TECHNICIAN ALSO SAID IT IS DIFFICULT/TEDIOUS TO FIX THIS PROBLEM. I THINK THE DEALER JUST DOESN'T WANT TO MESS WITH IT AS IT IS UNDER WARRANTY. *NM