Pulling a vacuum on an ac system requires a vacuum pump or venturi pump with the correct type connector. The pump is connected to the low side ac port, and the vacuum could take an hour to pull depending on the pump size.
Your 2000 Chevy Blazer air-conditioning bracket is held in place with for retaining bolts. Remove the retaining bolts with a 9/16 socket. The air-conditioning bracket will come off.
r-134A
my chevy blazer 1984 the air conditioner blows from down side only.
Into the low side service port.
The 2001 Chevy Blazer vacuum switch solenoid can be found on the firewall in the engine compartment. The vacuum switch solenoid will be on the passenger side of the firewall.
Check the 96 Blazer for any vacuum leaks in the system. A vacuum leak can cause the air flow to only come out of the heat vent.
Connect your Freon bottle to the low pressure port on your 1998 Chevy S 10 Blazer air conditioning compressor. Discharge the Freon into the compressor. A recharge kit will make this process quite simple.
why my floor air comes on when the setting is at panel air on 2004 Chevy blazer
Under the hood, towards the front, more towards the driver's side (unless you have a UK RHD model).
1975
Yes
There are two schrader / port valves to the air conditioning system. One will be a high pressure and the other will be a low pressure. You need a certified mechanic to check and refill the system. You can not simply refill the system.