Can I recharge my air conditioning myself? If so, how do I do it?
What tools do I need?

 

Hi, its me again. I have a 1999 Tahoe.
Paul

 

You'll need a good set of gauges, a good thermometer, some R134, and a vacuum pump if the system has been opened. Also a good working knowledge of how an A/C system works cuz you are going to need to know the system pressures at various temperatures. Not really a job for an amateur.