This current issue is a repeating one, which happens every 1.5 to 2 years. During the cold months, the heat will be on and working fine, then all by itself will go to extremely cold on driver's side. Sometimes, the heat will be turned on for both sides, and the driver's side will stay completely cold. A couple times in the summer when the A/C was on for a 100 degree day, the A/C will blow cold on passenger side, but NOT on driver's side. Now the HEAT was blowing out on driver's side. Playing with the temp controls sometimes fixes it, but sometimes NOT. I have driven 30 minutes on that hot day with HEAT blowing on my side, while nice and cold on the passenger side. In the colder months, the heat will work perfectly on the passenger side, but NOT on driver's side. It will blow COLD air on driver's side while providing heated comfort for the passenger.

This is a 2005 Chevy Silverado 1500 wt with a 4.3L V6. I love the truck EXCEPT for this split heating problem. I have paid $400 every time this breaks. I have owned the truck since 2006 with 12,000 miles on it and have had to fix this blend door heating problem every 1.5 years to 2 years. I have had it with this and have determined this to be a problem with the blend door wiring. But, I don't know how to fix it myself. Last year, the mechanic replaced the door 4 times (with no extra charge) and tested the wiring. He was stumped.

I just bought my 2005 Silverado in March 2011 to replace my "no complaint" great 1996 Silverado with 236K and still running strong. Here in FL, I certainly didn't think to check on any heater issues with the newer model. My concern at the time of purchase was A/C of course. I did receive some kind of hard to understand bulletin in the mail regarding something to do with A/C and fan blower so I had been trying to pay attention to any issues. Just after Christmas 2011, we had our first cold spell. First I needed to defrost with no luck until I drove 3 miles. Heater was blowing cold air. Next time I idled the truck for about 5 minutes in drive before leaving and held my hand up tot the vent on drivers side to notice what was happening. Blew cold air for first 2 miles, started to get warm, back to cold, then to hot. Just as I slowed down to a stop sign, it blew cold air again. As I left the stop sign, immediately went back to hot. There is a console in the middle of my seats and I am short with no passenger on the other side, so I haven't noticed a difference on the passenger side, but I will try to take note. Im used to having dual temp controls and I keep both sides set the same. I took truck to dealership not understanding what the bulletin was about and whether it concerned my issue(s). They basically told me it only dealt with the fan speeds and it didn't sound as if that was my problem. However they didn't even offer to take a look without charging me $99 although I am now worried about the chance of burning wires after reading this. I have smelled something odd just before this problem but until I read other complaints, I just thought it was an old car in front of me smelling. Now I wonder !

My silverado's #5 fan setting stopped at the beginning of the summer and then from time to time would not work at all. Then today the thing stopped again and my 2 year old had to go to daycare in a freezing cold truck. Called around and found this site took the cover off the blower and the resistor and wire harness had MELTED TOGETHER. Went to the dealer showed the melted parts to the service guy and was told there was no recall and I needed to go to the parts dept or they could fix it for over $400. Went to the parts dept and they had it on the shelf, harness was $94 and resistor was $68. Parts guy said to keep my receipt because he has seen this a lot and wouldn't be surprised if there would EVENTUALLY be a recall. I have never driven anything but a chevy and I know parts break but when a part gets hot enough to melt plastic together and its not just my truck and there are many complaints of the same thing GM should man up and fix it before someone gets hurt or killed and not after. I will be calling GM in the morning,I urge you all to do the same the # is 1-800-222-1020. It may not do any good but it cant hurt.

The problem started with wiggeling the plug to get the heat to turn on. Then eventually the plug melted and I believe no matter how many miles my truck has on it this was and is a factory problem. This is not a problem related to mileage on the truck, I contacted the dealer I bought the truck from new and of course your out of warrenty is what I hear. They didn't care that I had bought three cars threw them. How can we go about filing a class action suit against chevy? I will continue to monitor your site.

Bought this truck in 2007 so it was only 2 yrs (3 model years) old. didnt have any problems w/ it until less than 6 months ago. when as stated by others.. putting blower to #5 stopped working. 1-4 worked 'good enough' for me to not dip into my savings to fix. not sure if i had the burning plastic/wiring smell as i am a cigar smoker.. and between outside and my truck... there is no where else to smoke. mental note for anyone looking at extended warranty.. dont disclose this problem or its automatically not going to be covered (maybe dishonest... but until Chevy recalls, about your only recourse). unfortunately now... its gonna cost me hundreds of dollars just to get it looked at and 'maybe' fixed. Buddy has a year newer version of my truck.. and guess what.. he JUST got to the #5 not working stage. Hello... Chevy!! bailed out, now treat US right.