Chevy Suburban Rear Air not working sometimes?

[aggiem98]

When I purchased my suburban the a/c and heat would sometimes work in the front and rear. They "fixed" the problem and now a year later the entire rear component works sometimes and not others. Any suggestions?

[bcopeland]

It would help to know the year, but along the rear passenger side in the back there is an expansion valve that might be clogged.