So on Saturday I replaced the AC line in my Silverado; this was after I had the local Firestone do a $20 check on the system. Made sense to me since I bought the truck over a year ago and didn't use the system at all last summer, I had no idea if it even worked. Of course they found $400+ worth of work to do; a seal kit, orfice tube, replace a drier (that didn't need done) and also including the charging of the system. I was going to have another place look at it as a second opinion; I never messed with the AC before except to hose off the condensors on the Humvees while in Iraq. Of course my amazing wife had to challenge me with the age old question, "how hard can it be?" She's right, how hard CAN it be???? Off to Autozone I go where I recieved alot of help. I decided to replace the entire line (from drier to condensor) which only cost $87. The new line already had all the new o-rings on it and if I was disconnecting it all anyway..... why not? Sunday rolls around and off I go to Autozone again to pickup twos cans of R134 for a total of $60; it took the first can fine but the compressor wasn't kicking on. I already new that it was good due to jumping it before I started. As I have the second can hooked up and it isn't going anywhere too quick, my awesome wife disappears (to look in the truck) and turns on the AC system. It's amazing how quick that second can entered the system. All was great! I had her use the truck to give our daughter a ride to work; and she said it was cold enough to turn the fan way down. Felt pretty good for being the first big AC anything I've done. Now Tuesday rolls around, it is 100+ degrees outside; I figured what the hay good time as any to enjoy my work (and embaressment) and cool down in my ice cold AC............... I bet you can image my surprise when it was blowing hot air!!!!! 60 bucks literally in the wind! Moral to my story you ask.........? I'll be going to Autozone yet again this weekend for a can of the UV Dye and a UV light and glasses (which I should of done first) so I can find the leak. After I fix whatever I find I'll get another 2 cans of R134 and try again. Either way, it was still less than $400+ that Firestone wanted.