GMC Acadia Heating Cooling Problems Here I am again, really hoping I could change my user name. I drove my Acadia to another town about 60 miles from home and back today. Took the interstate driving about 70-80 mph. The trip there was uneventful with the exception of a little sluggishness at about 65-70 mph. I haven't taken the time to learn about those extra gears! The landscape was fairly flat all the way. On the return trip, it was raining pretty hard. I had to use the defroster to keep the fog off the interior windows. It was about 40-45 degrees outside. Anyway, the heater fan would turn itself up and down like it wasn't getting power. The actual air would be warm then cold. (It was not set to "auto") My 30 year old daughter tried different settings, but the darn thing would change itself from hot to cold. When I pushed the AUX button, it would blow cold air to the passengers in the rear. The unit would actually keep turning the air conditioning on itself. It would switch from one setting to another even when it was not set to "auto".

When I got closer to home on the return trip, I also noticed it was smelling like burned plastic or rubber inside the car. I have brought this to the attention of the local service department, but they were "unable to duplicate" when they had my car. I have been home for 3 hours and I just decided to go out into the garage to see if the seat warmers were working, just to check the electrical. I did not actually start the car, just turned the ignition to auxillary so that may be the reason they did not work. But as I walked in front of my car to go back into the house, heat was coming out the grill. The hood was warm to touch 3 hours after the car had been sitting! My garage is not warm and it is 40 degrees outside. The gauge on the dash still indicates my engine temp to be 210....good old 210! I don't know if the rain got the fuse box as others have stated is a problem or what. I am now at 3400 miles...what next? I was supposed to be taking my daughter back to her home this weekend, a 600 mile trip...don't dare take this POS that far away from home on a holiday weekend!

GM, are you listening?????See also: How to Check Your Car's AC System Maybe we could interest you in a pair of Homemade Side Mirror Extensions?portable air conditioning units israel Moderator - Buying questions? ac window unit trips circuit breakerPlease include city or zip code and trim you are shopping, FWD or AWD, etc.2000 ford focus ac compressor replacement Any suggestions on why now the heater won't work? Prices Paid, Lease Questions, SUVsAC Sounds to Be Aware Of Did your air conditioner recently start making a funny noise? Residential and commercial air conditioners often suffer similar problems that result in the same noises. Whether you’re a concerned homeowner or a business owner mystified by strange AC sounds, follow this guide to diagnose and repair the noises.

Clicking and ticking at startup: If you hear this sound, it’s likely that loose hardware has gotten inside the compressor. Take a look and see if you can safely remove any loose springs or bolts you find.Squealing at startup: Some commercial and residential AC compressors squeal when they turn on. You know this air conditioner sound is nothing to be worried about if it’s brief and doesn’t last beyond startup. However, if the unit never used to squeal but has recently developed the habit, it may need a repair.Trumpeting at shutdown: The compressor motor may make this AC sound at shutdown if internal refrigerant valves are leaking. As long as you don’t also hear a hissing sound, trumpeting at shutdown is not a concern.Hissing: This sound indicates a catastrophic refrigerant leak that needs professional attention right away. The sound won’t continue very long because it indicates that the refrigerant is dumping into the atmosphere (something the EPA prohibits). You need a refrigerant line replacement and recharge from a professional to get your AC working again.

Bubbling: This noise stems from a slow refrigerant leak that introduces gas bubbles into the refrigerant line. Call a heating and air conditioning specialist to perform leak detection and repair as soon as possible if you hear this sound.Animal sounds from the ductwork: It’s possible for animals to sneak inside and then get stuck in the ductwork. Birds clang and flutter around, rodents scratch and gnaw, and insects buzz. After removing the animals with professional assistance, it’s important to discover entry points from outside your home or building and block them so the problem doesn’t recur.Rumbling or whining: This is a warning sign that the fan motor may have a broken internal part. A repair or replacement is required to stop this AC sound.Banging or clanking: Sometimes, this noise indicates that the internal mounts, connecting rod, piston pin or other internal part is loose. Since the compressor on most modern residential and commercial air conditioners is a sealed unit, your only option is to replace it.

Buzzing from the outside unit: When the outdoor fan motor buzzes, the wiring or arcing connections may be loose. Carefully check these connections for signs of burning. If you see signs of burning, you could have a serious electrical problem that requires prompt attention.Rattling or clanking: If your residential or commercial AC compressor makes these noises, it’s likely the motor mounts have failed. Despite a normal appearance from the exterior, the motor is thrashing around on the inside. Replacing the compressor is your only repair option.Screaming: A high pressure sensor should prevent the air conditioner from continuing to operate if the internal pressure gets too high, but if you hear screaming, the sensor may be malfunctioning. Turn off the unit immediately and call a professional for help.One effective way to reduce the occurrence of these air conditioner sounds is to keep on top of preventative maintenance. A tune-up is the best way to catch problems early before they escalate and start making strange sounds.