The relay on the passenger side firewall is the ac compressor relay.
where is the ac relay in a 06 trailblazer
the relay should be under the hood on the top of the firewall or next to the main fuse box on the wheel well
The relay switch is in the fuse box on the left front fender under the hood. It's about a 12 in x 12 in black box.
The AC compressor relay is located under the hood, on the firewall, passenger side.
The AC power relay is located behind the right side of the dash on a 1991 Chevy Corvette. It is on top of the plenum.
AC relay is inside fuse-box on driver-side inner fender. Relay diagram is inside cover.
exactly where is the flasher relay
You are low on refrigerant, google R134a...
there are a few things that will cause this, relay or fuse to ac blown, if low on freon ac will not work. check and see if clutch on ac motor works. if not its the relay.
AC compressor clutch relay, starter relay, high speed blower motor relay,
yes as some cars don't even come with the ac option