Hello, I have a 2006 GMC Sierra 1500 5.3L Ext cab, the AC intermittently working. It will always work when I first start the truck… Read More »AC Intermittently Working 2006 GMC Sierra
Engine lopes and rpm drops down to 3-400, warning lights sometimes flash. If I turn off A/C the engine will go to approx. 700 rpm… Read More »AC Lowers Engine RPM 2003 Ford Windstar
I need to replace the low pressure switch on my AC system. Do I need to evacuate the coolant first before removing the old switch?