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-   -   AC Nothing At Switch ??? (https://67-72chevytrucks.com/vboard/showthread.php?t=672057)

JSeegs 05-28-2015 10:35 AM
AC Nothing At Switch ???
 
The AC system in my 1993 GMC 1500 V6 is all new.

Was working just fine two days ago but last night I hit the blue AC button and I get NOTHING.

Switch?
Relay?
Which one?

Thanks

Kudzupatch 05-28-2015 11:53 AM
Re: AC Nothing At Switch ???
 
Fuse?

61_FL_Apache 05-28-2015 12:59 PM
Re: AC Nothing At Switch ???
 
If its a relay, the one for the fuel pump should be the same. You can swap them to test.

JSeegs 05-28-2015 07:36 PM
Re: AC Nothing At Switch ???
 
Sadly - fuse is good.

speedygonzales 05-29-2015 06:15 AM
Re: AC Nothing At Switch ???
 
Jump out the high pressure switch. You could have lost pressure and system won't come on.

JSeegs 05-29-2015 03:17 PM
Re: AC Nothing At Switch ???
 
OK
Just for the heck of it I just went out and randomly pushed buttons on the heat/AC/fan control panel and, guess what, the AC kicked on.

Strong and cold as ever...

Ideas?

sntrym95 05-29-2015 04:28 PM
Re: AC Nothing At Switch ???
 
Bad solder joint somewhere? Loose connector? Pull out the control panel and check for loose wires, bad ground, etc.


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