Why is my 1999 Yukon running out of coolant?
Why is my 1999 Yukon running out of coolant?
If the air stays cool for the entire time while the air conditioning unit is running, you more than likely just ran out of coolant. Monitor the air conditioning on the 1999 Yukon for the next few months. If the air conditioning unit stops releasing cold air after only a few weeks or months of use, there is a leak.
Where is the air conditioning on a GMC Yukon?
Twist the nozzle’s top to release a small amount of air and close it after a second. This will clear the hose of any extra air. Open the Yukon’s hood and turn the Yukon on. Put the air conditioning on “High” or “Max.” Connect the recharge hose to the Yukon’s air conditioning valve. The valve is found on the rear wall of the engine compartment.
Why does the rear AC blow warm air?
I have heard of that issue on another acadia also. There are a few things you can do. Try turning the temperature control of rear system and see if it blows hot air when you turn it to full hot position. If that works, please reply back and there is a quick diagnosis that you can do to figure out the problem.
What’s the PSI on the Yukon air conditioner?
Open the service valve on the recharge can to shoot the recharge vapor into the Yukon’s air conditioning unit. Stop when the hose gauge reads between 25 and 40 psi.
Twist the nozzle’s top to release a small amount of air and close it after a second. This will clear the hose of any extra air. Open the Yukon’s hood and turn the Yukon on. Put the air conditioning on “High” or “Max.” Connect the recharge hose to the Yukon’s air conditioning valve. The valve is found on the rear wall of the engine compartment.
If the air stays cool for the entire time while the air conditioning unit is running, you more than likely just ran out of coolant. Monitor the air conditioning on the 1999 Yukon for the next few months. If the air conditioning unit stops releasing cold air after only a few weeks or months of use, there is a leak.
Why does my GMC Yukon blow hot and cold air?
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. I reached in and turned the air valve with my finger and verified that it was not stuck.
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….
What to do if your Yukon air conditioner is not working?
If the air conditioning unit is not responding as it should, it is easy to diagnose the problem. Turn the Yukon on and turn the air conditioning unit on. If the compressor works, move on to Step 2. If the compressor does not turn on, it will need to be replaced. This is a repair that should be handled by a professional technician.
What kind of engine does a GMC Yukon have?
The 1999 GMC Yukon came with a large, 5.7-liter V-8 engine that pushes out more than 255 horsepower. Generally, large V-8 engines give off a lot of heat. That heat eventually leaves the engine compartment and enters the cockpit through the air vents.
Where is the air conditioning valve on a Yukon?
Open the Yukon’s hood and turn the Yukon on. Put the air conditioning on “High” or “Max.” Connect the recharge hose to the Yukon’s air conditioning valve. The valve is found on the rear wall of the engine compartment. The valve cap will be blue.
