My rear air isn't blowing cold in my 92 Suburban. I was told there was most likely a blockage in the expansion valve in the rear. Is that where I should start or is there something else to look for?
Also, I talked with one guy who was doing this about a year ago, so memory is a bit faded now, he said the lines are hard to break lose. Is there a good/easy trick to this? Then what's the key to getting the rear panel apart? I heard it's a pain.