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The rear ac unit of your 2003 Tahoe does not blow cold the front works fine the line to the rear does not get cold like the line to the front?
I believe the rear Expansion Valve may need replaced. If it has failed the rear evaporator will not cool as the freon will not flow. These Tahoes have an orfice up front and an expansion valve in the rear (inside the rear HVAC unit under the passenger quarter trim). The coolant lines and the A/C lines have to be undone to remove the HVAC system from the vehicle to replace the Expansion Valve. It's about 650 at the dealer (or you can get the valve for under 100 from an auto parts store if you think you can do the job yourself).
What else can I help you with?
Why does rear heat not blow warm on 2003 Chevy Tahoe?
the accuator, located in the rear passenger side is bad. the controls in front when turned go to an accuator in the rear there are two of them one for hot/cold and one for the vents.
Why would a back heater blow cold air and front heater blow hot air in a 2003 Chevrolet Suburban?
The front expansion valve is clogged.
Why does the heater for my 2003 Honda Pilot not blow hot air out of any vents in the front but the rear vents blow hot air?
Your front blower motor has gone out. There is a front and a rear blower motor.
Why would my rear ac work but not my front ac on a 1999 Tahoe?
There is a secondary condensor in the rear of the vehicle that works off of the primary. If the AC in the rear is working and not the front, it could possibly be the air handler or the blower up front. Does the front blow air? If so is it ambient, hot, or a little cool? Incorrect: The 1999 Tahoe DOES NOT have a secondary condensor the only thing it may have in the rear is a heater core IF it is supplied with rear heat, if you are getting cold air in back and not the front usually means you are low on freon.
If the rear heater works ok why does the front heater only blow cold air?
replace front heater corefront and rear have independent heater cores
Why would the front ac work great but the reacr doesnt blow at all on a 2002 cevy Tahoe z71?
I have a 98 with rear ac. I had to replace a blower $165 from a local mechanic.
Heat will not work in the dash of a 1993 ford van the heat works great in the back blower How do you fix the heat problem from the front blower front blower will blow hot for a few seconds then cold?
heat works in back not in front front blows hot for a few mins then cold
Why does the rear heater in a 2003 Chevy Tahoe only blow cold air?
Try replacing the temperature control switch for the rear control cluster. Hope that that's the fix. Less than $20.
Why does the Ac only blow on high 2004 Tahoe?
Could be a faulty fan motor and/or switch.
What is the hose called that is on the front drive axle of a 2003 silverado 1500?
That is a vent tube, It let's the pressure out of the differential so it don't blow the grease seals out.
Who is gokus dad?
His dad is Bardock, he lunged himself in front of Friezas blow when Frieza attacked planet Vegeta.
Why does the front fan in a 97 Ford Expedition XLT not blow ANY air at all but the rear fan works fine?
one of the fan belts is broken.
