Refrigerant Type: R134a
Just looking at my 2001 GMC Yukon with rear air and noticed the hi and low side fittings are on the same line with only a coupler between them. The high side is on it's own section which T's off a line which appears to be on a line coming from the condenser that goes to the rear of the vehicle. This line going to the rear of the vehicle, about halfway back over the front fender liner, T's up and heads back to the firewall, as it heads back to the firewall, this is were the high side fitting it, just a few inches past the fitting is a joint (coupler) and following that is a short section that goes to I assume the evaporator stops at a joint going through the firewall), in this short section is the low side fitting. Is there anything special to consider with this setup? I'm used to the hi/lo fittings being on separate line, possibly running parallel with one another, but hadn't ran across one where they are inline with one another.
There's nothing wrong with the A/C, just trying to gather a little knowledge here.
The orifice tube for the front evaporator is in the fitting between the ports. So the high side does become the low side there.
ok, thank you
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