What whether My Silverado Compressor Testament Not Engage?
When the air conditioning quits working on your Chevrolet Silverado pickup, the anterior baggage to act is to unlatched the hood and verify that the compressor is properly engaging. A compressor that won't engage can oftentimes be constant by a habitation mechanic for a express diminutive expenditure by checking the electric components and refrigerant common. Aggrandized draggy issues must be handled by a trained technician.
Fuses and Relays
The aboriginal article to evaluation whether your compressor Testament not engage is the electrical development. Probation the fusebox inceptive, which is located under the hood near the Chauffeur's side fender on 1999 wound up 2010 Silverado imitation elderliness and on the left side of the instrument panel on older models (touch to your owner's tome). Place the blood 10 amp fuse pronounced A/C COMP and remove it. Provided the metal ribbon within the fuse appears burnt or broken, alter the fuse. Provided the fuse is okay, the coming suspect is the air conditioner relay. This relay is very located in the fuse box, though there's no visible indicator to verify that it's in working circuit. Most Car parts stores can criterion this relay for you, though it's hardly any for this relay to fail on Silverado pickups. A advanced relay can be installed for less than $20.
These issues must be tested with a mechanic's diagnostic scan tool and should be left to a General Motors certified air conditioning technician.
Older models originally used R-12 refrigerant, commonly known as freon, though many trucks have been retrofitted to use R-134a. Home R-134a charging kits are available. Start your engine and turn your air conditioning to the coldest setting. Connect the charging hose to the can of refrigerant and then to the low pressure port of the air conditioning system. On most Silverado models, this port is located on the accumulator: an aluminum cylinder located on the passenger side of the engine compartment. Hold the can of refrigerant upright and slowly open the valve on the charging hose. The pressure of your can will force the gas into your system. While the compressor may engage immediately, allow the can to empty before removing the charging hose. Test the pressure of your system with an air conditioning gauge and do not charge it over capacity.
Professional Help
A compressor that won't engage after refrigerant charging indicates deeper problems with your air conditioning system. It could indicate faulty pressure sensors, damaged wiring or a bad HVAC control module.
