What does it mean when your AC is blowing heat?
What does it mean when your AC is blowing heat?
Some of the most common reasons ACs blow warm air are: Dirty air filter. Frozen evaporator coil. Thermostat settings errors.
Why does my GMC Sierra blow hot air?
Our 04 Sierra 2500HD has had on and off problems the last year. Our most recent two was blowing warm air and then stopped altogether. No diagnostic codes. But our sons’ very smart “GMC guru” figured out it was the ignition switch.
How does the hot air blow in a GMC Yukon?
A small servo motor that turns hot and cold air valve in the heater box. I pulled the small flat motor off and noticed the shaft was jammed and would not turn when i moved the temperature selector knob from hot to cold.
Why does my front AC blow hot air?
Warm in front, cool in back. Please post any answers as I would like to know as well. a/c is working fine. sounds like the diverter door is remaining open allowing the fan to blow air through the heater core. this door is often controlled by engine vac or and electric door motor closing device. A good mech at the dealer should have found this.
What to do when your Chevy Silverado vents blow hot air?
1.Turn the ignition switch to the OFF position. 3.Remove the RADIO fuse for 10 seconds and then reinstall the fuse. 4.Place the ignition switch in the RUN position and wait 40 seconds for the ECC module to initialize. Also, try turning the temp to max then back to minimum. f1maxis wrote: I just had a similar issue with my 08 Silverado.
Our 04 Sierra 2500HD has had on and off problems the last year. Our most recent two was blowing warm air and then stopped altogether. No diagnostic codes. But our sons’ very smart “GMC guru” figured out it was the ignition switch.
A small servo motor that turns hot and cold air valve in the heater box. I pulled the small flat motor off and noticed the shaft was jammed and would not turn when i moved the temperature selector knob from hot to cold.
Why does my GMC air conditioner stop working?
For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.
Warm in front, cool in back. Please post any answers as I would like to know as well. a/c is working fine. sounds like the diverter door is remaining open allowing the fan to blow air through the heater core. this door is often controlled by engine vac or and electric door motor closing device. A good mech at the dealer should have found this.
