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 Chevy Silverado blow hot air?

My 04 silverado starts off cold on both sides then sometimes the driver side vents will blow hot air. when we stop and turn off truck and start it up and it is fine again. Could it be the thermostat for that side not working??? anyone have any answers for this problem?

Why is my GMC Sierra air conditioner not working?

On a 03-07 Chevrolet/ GMC Truck with the Electronic Climate control, Removing and reinstalling the HVAC fuse, causing the electronic climate control to RESET seems to Remedy the condition in which no power is getting to the AC compressor clutch connector, thus causing the Air conditioner not to work. Will this last forever?

Is the a / C not getting cold in a GMC Truck?

Also truck is a 2003 silverado 5.3L im actualy having the exact same problem, mine has plenty freon but still when it blows its not cold. its not hot but not cold maby blowing 75 degrees? idk but i know it sucks. Yes it does!

Why is my 2000 Silverado RCLB getting cold?

My 2000 Silverado RCLB was getting cold initially then dwindling down to just ambient air temps. Checked the running pressure and it was to the low side of normal. Sometimes it would do this and other times it would not, Shut the AC off for a few minutes and then turn it back on and BAM cold air again…

When did my GMC Yukon air conditioner start having problems?

I have had ongoing problems with my 2003 GMC Yukon. It started in September of 2004 with my rear air not working, it was inoperable; and, a popping noise in my steering, the steering felt loose. The rear air was temporarily fixed in October of 2004 but continues to be a problem now in September of 2005, one year later.

Why does my Chevy Tahoe blow cold air?

Turn the truck off then on and blows cold. Ended up being the clutch was bad and when it disengaged would never reengage. When it blows hot, pull over, restart and see what that does. For whatever reason this seems to reengage the clutch.

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.

Why does my 2005 Tahoe blow hot air?

My 2005 Tahoe hava AC giving hot air problem. AC would suddenly blow hot air just on the driver’s side while the passenger side still blew cold. The only way to correct it was to turn the car off and back on and then it would immediately start blowing cold again. This happens intermitently.

Why does my Chevy Tahoe have no air conditioning?

I don’t know if this is relevant information, but the rear climate control in my vehicle hasn’t worked in 4 years, the display will turn on, but no air blows through the vents. I just haven’t fixed it bc I hardly have anyone utilize the rear seats, and I don’t want to take it to a dealer out of warranty. My question is, what is going on?

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.

Why is the a / C on my GMC Yukon not working?

Goodbye GMC! A/C suddenly started blowing warm air, it was +99F outside. Took it to the shop to find out that it was a small crack in the condenser on top right corner. After doing some research, many 5.3L engines have had this problem or broken A/C lines due too bad design.

Where is the air mix actuator on a GMC Yukon?

It is a faulty Air Mix actuator or Blend door actuator. You must be logged in to see this image or video! It is located on the passenger side floor board under the dash.If you have the hush panel it will need to be removed using 7mm socket.

Why is the rear AC warmer than the front?

When the rear ac is turned on only, the air isn’t that cold. But when the front ac is turned on, the rear ac is blowing colder air out the vents. That’s because the rear AC by itself can’t turn the compressor on… The front AC has to be on for the compressor to turn on….

Where is the Hush Panel on a GMC Yukon?

It is located on the passenger side floor board under the dash.If you have the hush panel it will need to be removed using 7mm socket. You must be logged in to see this image or video!

Why is the front vents warm but the rear vents are cold?

The gauge showed that the system was low and I started to fill the system. The compressor clutch did turn on and the system is currently at 45psi (fill zone). Now, the rear vents is blowing cold air but the front vents is still blowing warm air.

Why does the a / C blow hot in my GMC Yukon?

I have a 2002 GMC Yukon and the A/C in the dash blows cold but the rear A/C blows warm. Does anyone know what could be the cause of this and how to fix it. Click to expand…

Where is the cold air heater on a GMC Yukon?

It was cold out and the heat would not work in the front only. Turned out that the blend door motor was dead. It is under the glove box at the passengers feet. A small servo motor that turns hot and cold air valve in the heater box.

Is the front of my truck warm or cold?

The front and rear where blowing warm air with the temps set at 60 degrees max. Today, I decided to purchase the EZ-CHILL from Advanced Autoparts to recharge my system (low-side).

What happens if your AC unit blows cold air?

During operation, the high pressure side of the refrigerant system can reach pressures of over 275 PSI. Use extreme caution when working around the A/C system. Never disconnect or vent the refrigerant to the atmosphere. Refrigerant can cause extreme frost bite or blindness if it comes in contact with your skin or eyes.

The front and rear where blowing warm air with the temps set at 60 degrees max. Today, I decided to purchase the EZ-CHILL from Advanced Autoparts to recharge my system (low-side).

What to do when your car heater is blowing cold air?

Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary. This should bleed off the air bubble. When the engine is fully warmed up, put the cap back on and take a drive to see if the heat output has returned.

What kind of problem does my GMC Yukon have?

I’ve got a 1997 GMC Yukon (bought in 2001). Anyways, it’s always had this problem: the fan starts blowing, I can feel the faintest leak of hot or cold air out of the vents, but no air comes out of the vents. This is an intermittent problem.

Why is my Yukon XL not getting cold?

The A/C in my 2004 Yukon XL wasn’t getting cold any more. I figured it was a basic freon leak. Dealer said the control module needed to be re-programmed. Charged me 2.5 hours labor at 95 $/hr. They could not explain what went wrong or why it needed to be reprogrammed, they just said that is what needed to be done. Did I get duped? Ouch.

Why does my Yukon XL blow cold air?

While driving with the a/c on, the front driver vent will suddently blow heat. All other vents including the rear are fine and still blowing cold! I have to stop the car, turn the engine off and restart the vehilce. It will temporarily fix the problem, but it will occur again while driving!

Why does my GMC Yukon Denali XL not heat?

I will have the heat on and the air coming out of the vents is cooled air. 2003 GMC Yukon Denali XL started blowing air out of defrost after a battery change. Hopefully its just a bad mode actuator. Rear a/c and heat not changing to heat staying cold and not changing from ceiling to floor.

Where does the cold air come from in a Yukon Denali?

Cold air blows when heater is on even after 20 minutes of warming up. AC onm, blows heat on drivers side and cold everwhere else. Front panel doesn’t blow any heat or a/c. Very little heat/ac comes from the front floor vents.

How much does a GMC Yukon XL heater cost?

The average cost for a GMC Yukon XL AC Diagnosis is between $53 -$67. Learn More Heater blows hot on passenger side and cold on drivers side. dont get heat on defrost at dash either. What do I need to have replaced? While driving with the a/c on, the front driver vent will suddently blow heat.

How does the hot air blow in a GMC Yukon?