2003 Yukon xl --front & rear air has stopped working. The fan works fine. We're on vacation. Is there a quick remedy to get it cooling to make it home (6 hr drive)? Thinking it may be best to have it repaired at home. Thanks !!

Try to back wash the heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged....

Fyi u have to run the engine for awhile with the heater fan on

Rear heat not working ? The blower motor isn't working ? No air coming from the rear vent's ? Is it just a yukon or XL or denali ? What size engine ? 4.8 , 5.3 or 6.0 l Manual or automatic climate control ? Does the blower motor work on any speed ? The front an rear heater system are seperate , have there own electrical circuits . Could have a couple of different systems ,could have a control processor or relay's an a resistor block . Do you know how to test automotive electrical circuit's using a wiring diagram and a DVOM - digital volt ohm meter ? Plus to get at the rear heater-A/C unit you would need to take the right rear trim panel off .
2003 Tahoe No Rear Heat Fix Suburban Yukon XL Repair

Could be the blower motor, the resistor, or the control on the dash.
You'll need to check the circuit for voltage when it fails to work.

Sounds like a bad blend door actuator. That's the motor that diverts air between the heater core and AC

Does the front blow cold ? Diagnosing rear problems
Taking to a qualified repair shop an having it diagnosed would be your best bet >

YOU BLEW A FUSE

check and make sure the duct work going to the rear vents are attached and in good condition

it look like the belt broke get fixed as soon as possivel

are you sure it was charged to full capacity?

I would recommend taking it to a dealer, simply b/c there is most likely a clog in the system going to the rear, trust me, you don't want to go there