What to do about a 99 Chevy Blazer A/C blowing hot air

There is a small leak in your system and you lost some R134a which is the gas that is used in your A/C unit. slow leaks are common on older cars and truck and the o ring seals my be dried out or warn like the one on your A/C compressor. You can buy a R134a recharge kit at Auto Zone or Wal Mart for around $45.00. Just follow the instruction and if you find that the A/C fails again with in 2 weeks, then your going to have to get the leak in your A/C system repaired. Good luck and hope this helps, check the fuse and the relay which is in your glove box behind the panel the say's relay. Three are (3) relays in there and you can switch them around to see if the A/C comes on. Keep me posted, be glad to help

PROBABLY THE AIR COMPRESSOR HAS NO FREON IN IT . COMPRESSOR PROBABLY HAS A LEAK IN IT.

Our a/c is probely emty you haft to go to a mecanic and get itt refild the a/c contains a special cooler fluid