Most people want cold air when they are driving in warm weather. If the air conditioner in your Silverado is blowing warm air, adding refrigerant to the system may correct the problem, as long as the components are working properly. You can find an R134 automotive recharge kit at your local automotive parts store to do the job.
Things You'll Need
- Safety glasses
- Leak detection kit
- Air conditioner pressure gauge
- R134 air conditioner recharge kit
Look closely at the air conditioning lines to check for damage. You can use a leak detection kit to make it easier to find leaks. These are available at your local automotive store. If you see any visible damage, take your Silverado to a professional to recharge the air conditioning system with refrigerant. Find the Low Pressure Side service port. This is located on the line coming out of the compressor toward the engine block. Take off the black cap that is covering it.
Start your truck and turn on the air conditioner. Use the automotive air conditioner pressure gauge to check the Low Pressure Side pressure. In order to get the most accurate reading, you need to have the air on the coldest setting and the unit blowing as hard as possible.
Hook the refill hose up to the connector on the Low Pressure Side of the air conditioning system. The Low Pressure Side connector is smaller than the High Pressure Side connector. Because the connectors are different sizes, the refill kit hose should fit only on the Low Pressure Side port.
Hold the can upright and slowly turn the valve. Keep in mind that it may take 10 minutes or longer for the can to empty into your system.
Close the valve on the refill hose when the pressure is within the normal range and remove the hose from the Low Pressure Side connector port.
Replace the cap on the Low Pressure Side connector when you are finished recharging your air conditioner.
Leave the Silverado running for 20 minutes so the refrigerant can circulate evenly through the entire system.
Tips & Warnings
- Protect your eyes and skin when working with refrigerant by wearing safety glasses and gloves.
- Use more than one can if the pressure is still too low after you add one can of refrigerant.
- In some areas, you must have a license to purchase refrigerant, even if it is R134. If this is the case in your area, take your Silverado to a professional to recharge the air conditioner.
- Be careful when you are recharging the air conditioner. The system is under extreme pressure. Overfilling it or working on the High Pressure Side can cause an explosion that can result in injury or death.
- Dispose of refrigerant properly. Never discharge it into the air, which is a federal crime.
1999 Silverado Heater Control Problems
The Chevrolet Silverado, a full-size pickup available in rear-wheel and front-wheel drive, was introduced in 1998. Edmunds.com contends that the Silverado is...
Specs For a 1998 Chevy C2500 AC
In 1998, Chevrolet offered the C2500 pickup that came standard with a 5.0 L. V-8 engine that produced 230 horsepower. When repairing...
How to Add Freon to a Car Air Conditioner
When your car's air conditioner doesn't seem to be blowing cold air anymore, you may need to add Freon to the air...
How to Recharge a Chevy Tahoe Air Conditioner
Over time your Chevy Tahoe’s air conditioner may begin to blow warm air. This is a sign that it needs to be...
How to Recharge a 1999 Silverado AC System
Recharging the air conditioning system on your Chevy Silverado is necessary after you perform repairs that involve replacing parts. The 1999 Chevy...
How Do I Add Freon to a 98 Chevy Blazer?
The 98 Chevy Blazer comes equipped with an air conditioning system that uses a more environmentally friendly refrigerant (Freon) called R-134a. Over...
How to Add Freon to a 1992 Chevy Pickup
Charging the air conditioning system on a 1992 Chevy pickup is a common home mechanics project. Over time the system will develop...
How to Add Freon to a 2004 Chevy Silverado
Freon is a chemical that mixes with air to cool the air. Freon is commonly used in air conditioners to create the...
How to Recharge 1999 Chevy Malibu Air Conditioning
Recharging the air conditioning system in your 1999 Chevy Malibu after making repairs to the system is a two-part process. Since the...
How to Add Freon to a 2003 Chevrolet Malibu
The 2003 Chevy Malibu air conditioning system uses R134a as the refrigerant. You can now buy a can of refrigerant from your...
How to Recharge the AC in a Chevy Truck
You need to recharge the air conditioning (AC) system in your Chevy truck when the system has been repaired or it has...
How to Add Freon to a 2000 Suburban
The air conditioner in a 2000 Chevrolet Suburban may occasionally need to be recharged with refrigerant gas. Before 1995, cars used Freon...
How to Add Freon to a 2002 Chevy Avalanche
Air-conditioning systems will function properly for many years without problems, but eventually enough refrigerant will seep past the seals to reduce the...
96 Chevrolet Pickup Silverado Air Conditioning Problems
The 1996 Chevrolet Silverado has reports of air conditioning problems, according to RepairPal, an automobile information portal. These reports pertain to problems...