newbie with question

[stevep]

I just bought a 2000 escalade i have a problem with the rear air the front blows out cold and the rear sometimes blows out cold. Also the steering feels tight but when you drive down the highway it seems to wonder all over the lane could it be the steering box thanx

 

[024mula]

These A/C Systems have one compressor one condenser 2 orifices. Cold front and warm rear or sometimes cold rear, the rear orifice could be jacked causing the freon or what ever is in your system to just run to the rear and stop once it meets the orifice. Only way to know is to have it worked on.
I just had a similar problem on my daily driver a 99 Dodge Durango with Rear Air. They Run an Orifice, there is something else that could be in there, the name is escaping me at the moment, but it does the same thing.
Hope it helps,
Jeff

 

[grimm]

For your steering, check the EVO sensor.