The contact owns a 2006 Hummer H3. When the air conditioner was activated, the contact heard an abnormal noise. The contact also noticed hot air and an abnormal odor entering through the vents. The contact stated that the failure had the same symptoms as described in NHTSA campaign number: 15V421000 (visibility). The vehicle was taken to the dealer (southtowne Chevrolet Buick GMC, 695 bullsboro dr., newnan, ga 30265) where it was diagnosed that the air conditioner unit needed freon, but the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 39,000.

- Newnan, GA, USA

The contact owns a 2006 Hummer H3. The contact stated that the heat and defroster system in the vehicle became inoperable without warning. The vehicle was taken to a dealer where it was diagnosed that the blower motor resistor failed and needed to be replaced. The vehicle was previously repaired for the failure but the failure recurred. The contact received notification of NHTSA campaign number: 15V421000 (visibility), however the part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure. The failure mileage was approximately 68,000. VIN tool confirms parts not available.

- Brooklyn, NY, USA

The contact owns a 2006 Hummer H3. The contact stated that while driving approximately 35 mph, the dashboard caught on fire from the passenger's side of the heater. The vehicle was taken to the dealer, who diagnosed that the harness, resister fan motor, replay, heater hoses and baffle fan needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the problem. The approximate failure mileage was 112,000.

- Swartuzcreek, MI, USA

The ventilation system stopping blowing air. I went online and did some research about this and found that many others had the same complaint and how to diagnose it. I opened up the area under the glove compartment and found that a resistor was burnt up. This appears it could have been a very dangerous situation if it had caught fire.

- Mount Joy, PA, USA

The contact owns a 2006 Hummer H3. While driving approximately 25 mph, the blower motor failed and the contact noticed a burning odor. The vehicle was taken to the dealer for diagnostics where the technicians stated that the wiring harness was melted and the heater blower motor resistor needed to be replaced. The vehicle was not repaired. The approximate failure mileage was 104,000.

- Lincoln, ME, USA

Overheated and melted resistor and wiring harness for the HVAC blower motor on a 2006 Hummer H3. This has happened to my vehicle and a friend of mine. Also many owners on the internet have had this same problem. It is so prevalent that many parts suppliers are advertising the parts for sale.

- Philadelphia, PA, USA

Heating/ ac fan blower harness burnt up. A very common problem on an Hummer H3/.

- Spring Grove, MN, USA

Heater A/C fan motor quit. The dealer repaired the link as he said it had gotten hot and burnt out. I can't find invoice at this time, but believe it to be around $90. Service done by whitehead Chevrolet of truth or consequences, nm. The service mgr said this was a common problem.

- Marceline, MO, USA

HVAC system fan blower works intermittently...sometimes the fan blower doesn't work or stops working altogether causing a major problems on cold or foggy days when you need the defrost to work. Reported this to GM dealer but no repairs made.

- Goldsboro, NC, USA

Last week I was driving locally home when my H3 cab filled with smoke blocking my vision and the A/C blower stopped...I nearly drove into a tree...if I had been on the highway at speed, I would be dead. I took the car to a local shop, as close as I could get...anyway my dealer was shut down as GM went into bankruptcy. The mechanic found that a wiring harness connector burned out, creating the smoke and cutting the blower off (see photos). I reported this to GM, asking them for refund of costs and to investigate this serious safety matter. They refused because I am out of warranty! I believe they are covering up a serious manufacturing flaw...when the mechanic phoned GM for the wiring harness section involved, they had it in stock ready to go...evidently, GM knows of this flaw. If this problem is not taken seriously, someone will be killed by it! updated 08/20/09.

- Glen Cove, NY, USA