Why is the AC not working on my Chevy Silverado?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my Chevrolet Silverado 1500 has air conditioning problems?

Why does the radiator fan stay on in a 2014 Chevy Silverado?

I have the same issue with 2014 Silverado. Have you found a solution. 9 people found this helpful. Unfortunately, I have not. I changed the coolant temperature sensor by the thermostat. Everything stayed the same. I realized my a/c compressor isn’t engaging.

How long does the Chevy Colorado fan stay on?

2 people found this helpful. My 2018, chevy colorado -fan stays on 5 minutes, after shut off.. first time last Thanksgiving, then didn’t do for 10 weeks, sensor sticking?! 60K miles. Dealer says today water pump and sensor.. was $1500, I just came out of warranty, they’re doing for $250 plus I pd $130 for diagnostic today.

Why does my radiator fan stay on all the time?

Radiator Fan stays on. No A/C Ok. Looked everywhere and can’t find anything about this. My radiator fans are all out off whack (simply put). They run from the time i turn the truck on to the time I shut it off. minutes and kick back on. Slow then fast then back to slow. No check engine light.

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my Chevrolet Silverado 1500 has air conditioning problems?

Why does my Chevy Tahoe stop blowing cold air?

As it turns out, the AC system in Escalade, Silverado, Sierra, Yukon, Suburban, and Tahoe trucks stops working and ceases blowing cold air because of a defective bracket design affecting the A/C compressor and condenser line.

What to do if your GM fan won’t defrost?

See if this fixes the problem. Many of GM’s AC control heads have a built in reset feature that when power is removed and then applied it will go through a cycle that activates all the vent doors and mode doors. It’s worth a try.

Why does my car not change off defrost?

I won’t change off defrost/floor setting I replaced the blend door actuator and did not seem to help it My car has 56000 miles. My car has an automatic transmission. Hello. You need to see if the mode door actuator is working. This actuator is on the evaporator case on the driver’s side above the gas pedal.

Is the air conditioner on my Chevy Silverado not working?

Air conditioning on my 2015 Chevrolet silverado is only blowing warm air. Air conditioning system stopped working only blows hot air. Called dealer about the problem after I learned this has been an ongoing problem. Chevy will not cover this problem under warranty.

Why is my Chevy Silverado 1500 blowing hot air?

When the air conditioner in your 2015 Chevrolet Silverado 1500 starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

How to add refrigerant to a 2014 Chevy Silverado?

2015 Chevrolet Silverado 1500 LT 4.3L V6 FlexFuel Extended Cab Pickup Change a rear blinker Don’t send mixed signals – if your turn signal doesn’t blink, or blinks rapidly, you likely have a burnt out bulb 2015 Chevrolet Silverado 1500 LT 4.3L V6 FlexFuel Extended Cab Pickup Add air to your tires

What kind of refrigerant does a 2000 Chevy Silverado use?

Note: a U.S. built 2000 model year truck uses R134a refrigerant, not Freon (R12). OK, you’re on the right track. If the system is fully charged (pressure correct), but the A/C compressor clutch does not engage, the fault is electrical.

Why does my Chevy Silverado blow hot air on one side?

This article applies to the Chevrolet Silverado (1999-Present). Does your Silverado blow hot air on one side and cold air on the other? If you have dual zone controls you may have run into this problem before. There is a way to fix this if you’re patient and willing to troubleshoot your way through it.

Where can I find the part number for my Silverado AC?

Thanks to their wonderful website, there is no direct link or part number. When added to cart it shows as “Air conditioner and heater, Evaporator and heater components, Actuator, Mode temp and def, Mode temp and def – 2003-07 – 2003-07” Somewhere along that path, you will see a View Illustration button.

What’s the problem with my Chevy Silverado clutch?

I’m experiencing similar issues with a 2011 Chevy Silverado AC clutch is cycling the green with white Tracer wire coming from the PCM is ground while the compressor is on but 14 volts on the compressor is off

What to do if your air conditioner won’t engage?

When the air conditioning quits working on your Chevrolet Silverado pickup, the first thing to do is to open the hood and verify that the compressor is properly engaging. A compressor that won’t engage can often be fixed by a home mechanic for a very small cost by checking the electric components and refrigerant level.

How do I charge my Silverado air conditioner?

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.

Why is my air conditioner not blowing cold air?

A defective relay, compressor clutch coil or damaged compressor are all possibilities. The air conditioning system is equipped with safety switches that automatically turn the compressor off when the A/C refrigerant level becomes low.

When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

How big is the AC system on a Chevy Silverado?

This truck has a revised spec of 1.6 lbs 134A. Adding too much freon will not make this system cool.

What should I do if my Silverado compressor does not engage?

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.

Why is my AC blowing hot air but not cold air?

Turn the a/c on and go out and put your hand on the line coming off the dryer, silver canister near the firewall. Be care ful as one line will be hot and one line cold. If the line is cold you have a door actuator problem. Easiest fix for that is get you a couple of shutoff valves at the auto parts and put in line of the heatercore for the summer.

Are there any problems with the Chevy Silverado?

The Chevy Silverado went through many years with an excessive oil consumption problem, but the most serious appears to be within the 2009 to 2013 model years.

Why does my Chevy Silverado use so much oil?

The culprit for the excessive oil consumption issue lies with a defect in the 5.3-liter V8 engine. Back in 2007, GMC introduced a feature for its motors, called the active fuel management system, or AFM. The company implemented it to increase fuel economy, get better horsepower, and more torque.

How to troubleshoot the air conditioning in a Chevy Avalanche?

Look at the compressor. It is cylindrical in shape, sits directly next to the engine and has a belt. Make sure the belt is intact and there is no rust. Listen for the blower motor to make sure that it is running, but not overly loud.

Are there any problems with my 2014 Chevy Silverado?

Please also check out the statistics and reliability analysis of the 2014 Chevrolet Silverado 1500 based on all problems reported for the 2014 Silverado 1500. I currently own a 2014 Chevrolet silverado and have it in she shop because the air conditioner was blowing out hot air.

Is there an air conditioner problem in a 2014 Chevy Silverado?

The contact owns a 2014 Chevrolet Silverado 1500. The contact stated that the air conditioning unit emitted hot air inside the vehicle. There were no warning indicators illuminated.

Why is my a / C not working on my Dodge Silverado?

The dual-zone electronic control seems to be working properly. The serpentine belt doesn’t seem loose. The compressor pully is still turning (I had a Dodge that quit and froze up making an awful noise as the belt shreaded).

Why is my Chevy Silverado not shifting to 4 wheel drive?

If your vehicle does not shift into 4X4, or requires a longer time than usual to do so, the problem could be your transfer case, which is part of your 4-wheel drive system. The solenoid that holds the 4X4 off, so your truck can be driven in 2-wheel drive, could also be the culprit. Have your vehicle inspected by a professional.

Where is the air conditioner port on a Chevy Silverado?

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.

Why is the refrigerant gas not working on my Chevy Silverado?

In addition to the normal loss, component defects are usually responsible for the escape of the refrigerant gas on Chevy Silverado 1500. A defective sealing ring, a worn line or a condenser that has been damaged by a stone chip are the most common causes. Finding these mostly very small leaks is often not easy.

Why is the gas heater on my Silverado not working?

The heater is blowing cold air. The engine warms quickly to 190 degrees so i think the thermostat is OK. The fluid level in the overflow tank look … read more

What kind of car is a Chevy Silverado?

Autotrader has 42,940 Used Chevrolet Silverado 1500 cars for sale, including a 2002 Chevrolet Silverado 1500 Long Bed, a 2017 Chevrolet Silverado 1500 4×4 Regular Cab, and a 2018 Chevrolet Silverado 1500 4×4 Crew Cab LTZ.

Why does my GMC Sierra not blow cold air?

My 95 GMC Serrea AC will not blow cold air. The pressure is right in the system. The compressor run right. The air does get colder when running at freeway speeds but warms up at lower speeds. Similar problem in GMC Sierra was solved by replacing the A/C control module in the dash.

Where is the climate control on a Chevy Silverado?

I’ve replaced the blower motor (passenger side underneath dash), resistor (behind the glove compartment), and checked ALL fuses left of driver and under the hood, and still the blower motor does not run. A/C comes on but no air from any of the vents on any settings, heat, a/c, defrost, floor, vents, or combination.

How to fix a Chevy Silverado climate control problem?

This initiates a re calibration of climate control equipment and actuators. It will fix your problem. You can’t post conmments that contain an email address. My passenger seat is stuck in recline. It is electric and a 2007 Chevrolet Silverado.. It worked laying down but now will not come up.

Check out our Chevrolet Silverado overview to see the most problematic years, worst problems and most recently reported complaints with the Silverado.

What kind of a C system does a Silverado 1500 have?

The A/C system in your Silverado 1500 consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling. How to add freon to your 2008 Chevrolet Silverado 1500: hook up the can of refrigerant (likely r-134a) to the low pressure port.

When the air conditioner in your 2008 Chevrolet Silverado 1500 starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

How to know if your air conditioner evaporator is leaking?

1. The cool air is weak or no cold air is blowing at all. When the AC Evaporator coil or core is leaking, it will impact the effectiveness of the air conditioning system. Generally speaking, the greater the leak, the cooling capacity is reduced. 2. You notice a strange odor when using your AC system.

When do you need to replace an AC evaporator?

When issues occur, in most cases it’s due to leaks created in between these two parts. Since the AC evaporator requires constant pressure to effectively remove heat, a leak is typically the leading cause of a malfunction. As such, when a major AC Evaporator leak is detected, replacement is the best course of action.

How to test a Chevy Silverado HVAC system?

Plug in the electrical harness. Now set the fan and heater controls to off and the temperature controls to the coldest setting. Reconnect the battery, turn the key and listen for the actuator to click. Wait five minutes then test the controls to see if it worked.

When the air conditioner in your 2004 Chevrolet Silverado 1500 starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

How to add Freon to a 2014 Chevy Silverado?

How to add freon to your 2014 Chevrolet Silverado 1500: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure. In addition to cooling, freon lubricates the compressor when it runs.

Is the blower motor on a Chevy Silverado working?

Blower Motor does not work on 1 and 2 speed chevy silverado – YouTube I had a Bad Relay. I got one here https://amzn.to/2PSr6fQ It seems the 88-94Trucks have a different system to control the speeds than the 96-00 OBS style Ch…

Why does my Silverado blow cold air and then hot air?

I have a 2004 Silverado 4×4 with duel temp controls. It recently starting blowing hot air when the a/c is on but it only blows hot air on the drivers side. The passenger side still blows cold. The only way to get it to blow cold again is to shut it off, wait a few minutes and start it back. It doesn’t do it every day.

What kind of engine does a Silverado 1500 have?

Key Specs. of the 2005 Chevrolet Silverado 1500 base trim shown. Body Type: Truck See similar vehicles. Engine: 300-hp, 6.0-liter V-8 (regular gas) Drivetrain: 4×2. Towing Capacity: 8,200 lbs.

Why is my blower not working on my Chevy Silverado?

Another common problem will be the blower motor will stick in the ON position and never shut off. You can access the resistor module behind the fuse box located on the driver’s side lower dash compartment. You must visually inspect the resistor, and make sure it isn’t melted or burnt. If it is, then replace it.

What to do if your a / C won’t turn on?

Have someone watching the A/C compressor while you start the truck and turn the A/C on. If the compressor cycles on, turn it off. You now just narrowed it down to either low refrigerant or a bad pressure switch. Cut your fingernails. That’s not me. And spell your name right. There’s two T’s in Matthew. Unless people wipe their feet on your face.

Where is the recirculation button on a Chevy Silverado?

(The recirculation button is right above the AC button). This causes the an instant temperature update to your system and allow your AC to come on and stay on afterwards. My Chevy service rep. looked up the problem on his GM computer while I stood there, then he printed this solution off for me.

Why is my a / C not working on my Chevy Silverado?

Subject: Air Conditioning (A/C) Blows Warm Air Intermittently. This condition may be caused by the A/C compressor clutch cycling out early when the low pressure side reaches approximately 380 kPa (55 psi). The fix is to bring the vehicle to the dealer to have the latest software installed into the vehicle.

Why does the AC flash on and off in my Silverado Sierra?

If the truck thinks its below 40 degrees outside, your AC will not be allowed to come on to protect the compressor. Go figure!! The darn AC light will just flash on and off. I ran into this problem in the spring when the temps would drop below 40 degrees during the night, then shoot back up to the 70’s during daytime.

Is the a / C on my Silverado Z71 working?

My 2006 Silverado Z71, 5.3L has A/C acting much the same as “Terry” from 05/June/2018. The difference is the 85 relay terminal is “pulsing” between green indicating a good ground and anywhere from 0.1 to 0.4 V. Would this indicate a bad ground wire coming from the PCM or maybe a bad PCM?

How do you change the HVAC in a Chevy Silverado?

Lower the steering wheel and pry off the paneling around the driver’s side dash, the HVAC controller and the radio. Unscrew the bolts on either side of the HVAC controller, push in the clips, and then pull it out. Disconnect the electrical harnesses. Connect the new HVAC controller and slide it into the housing.

How to tell if your Chevy Silverado is not working?

The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck. To figure out which one isn’t working shut off the truck and turn the fans off. Then listen carefully when you turn the key as you should hear the actuators click to life. If one of them doesn’t click it’s probably not working.

Where can I buy a Chevy Silverado a / C compressor?

Buy 2003 Chevrolet Silverado 1500 A/C Compressor from AutoZone. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

When is the best time to have your AC serviced?

Lastly, if your vehicle has not been converted from R12 to R134a refrigerant, the best time to have this service completed is when the air conditioning system is already being serviced.

Why does my 2003 Chevy Silverado not start?

My 2003 Silverado has issues starting sometimes. If I hit the steering column it will sometimes start. My silverado has left me stranded numerous times with this intermittent starting bullsh!t. The truck starts majority of the time however sometimes I go to start the engine and nothing!!

Is there a problem with my Chevy Silverado?

Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC – YouTube Cold Hard CHEVY Start Problem Solved! Chevrolet Silverado Express Suburban Tahoe GMC If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

Why does my GMC Silverado have no crank?

This is a fix for a known electrical issue with the 2003-2007 C/K series GM Trucks where a bad ground causes multiple issues. Such as no start, no crank, intermittent no gauges, and sometimes the theft light would stay on, and the parking lights would stay on.

What kind of engine does Chevy Silverado have?

I have a 2002 Silverado with 5.3L engine. Occasionally, when I turn it off, come back a few minutes later, it turns over but won’t start. Leave it 15 mins and it starts. Recently wouldn’t start at all, dealership put in fuel filter and fuel pump. Problem persists. Good fuel pressure (55psi).

Why is my speedometer not working on my Chevy Trailblazer?

Your Chevrolet’s speedometer gives important readings about your current speed. If you are experiencing problems with yours, don’t fret — these issues are common and easily fixed (usually). In fact, TrailBlazer speedometer problems are one of the most common topics discussed on popular Chevy online forums.

Why is the cruise control not working on my Chevy Silverado?

Open the fuse boxes and read the cover for fuse locations associated with cruise control. Fuses break due to age, but a blown fuse may also indicate a short in the wiring. Figure 1. A good fuse (on the left) compared to blown fuses (on the right).

What are the problems with a 2002 Chevy Silverado?

1 Transmission Failure 2002 Silverado Average Cost to Fix: $1,900 Average Mileage: 68,000 mi 2 Rusted Out Brake Lines 2002 Silverado Average Cost to Fix: $1,100 Average Mileage: 112,000 mi 3 Paint Is Flaking And Peeling Off 2002 Silverado

When the air conditioner in your 2013 Chevrolet Silverado 1500 starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

What kind of refrigerant does a Chevy Silverado use?

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Silverado 1500 consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

Why is my 5.3 liter Chevy engine not working?

There is also the factor of environmental pollution which is also related to excessive oil usage. When you factor in excessive oil usage, the greenhouse gas increases rapidly, which then leads to pollution. Unfortunately, for many 5.3 Liter Chevy Engine owners, the cost to address this problem is too high in terms of labor and parts.

What kind of engine does a Chevy Silverado have?

The initial run of the Chevy 5.3-liter V8 comes in the third generation of Chevy’s small-block V8 engine. For marketing purposes, this engine is known as the Vortec 5300. As we mentioned before, it first became available in 1999. You’ll find this engine in the Chevy Silverado and Avalanche as well as the GMC Sierra.

What to do if your air conditioner is not working?

Replacement of most air conditioning components requires complete evacuation of the air conditioning system with a refrigerant recovery machine. Once components are re-installed, the technician will remove all air from the system in preparation for recharging the system with new refrigerant.

How much is the AC unit on a Silverado?

The hardest part was the last screw holding up the plastic cover above the center hump. Gonna kick that engineer. The part is $137 on gmpartsdirect. Thanks to their wonderful website, there is no direct link or part number.

What happens when you turn off the a / C on a Silverado?

Basically the a/c stops cooling after a while, sometimes 30 mins to an hour. It doesn’t blow heat, just becomes ambient, musty and damp, on both the passenger and drivers side. I can switch the sytem off, keep driving for 5 mins, switch it on and it will cool nicely.

Where is the resistor module on a Chevy Silverado?

You can access the resistor module behind the fuse box located on the driver’s side lower dash compartment. You must visually inspect the resistor, and make sure it isn’t melted or burnt. If it is, then replace it. If the problem persists, visit your dealer or repair shop. Figure 1. Blower motor resistor module.

What kind of air conditioner does a Chevy Silverado have?

I have a 1996 Chevy Silverado. The compressor is good and the pressure switches are new. They A/C works if I connect a hot wire to it but it constantly kills my battery.

Where is the fuse box on a Silverado?

Check the fusebox first, which is located under the hood near the driver’s side fender on 1999 through 2010 Silverado model years and on the left side of the instrument panel on older models (refer to your owner’s manual). Locate the red 10 amp fuse marked A/C COMP and remove it.

How can you tell if your AC switch is failing?

If you begin to notice that the AC system is not blowing as cold as it used to, then that may be a sign that the switch has failed, or is beginning to fail. If the switch is not operating correctly, the AC system will not be pressurized correctly and will not work as efficiently in cooling the air.

What are the problems with a 2004 Chevy Silverado?

1 Speedometer Doesn’t Work 2004 Silverado Average Cost to Fix: $400 Average Mileage: 64,000 mi 2 Transmission Failure 2004 Silverado Average Cost to Fix: $2,100 Average Mileage: 55,000 mi 3 Brake Line Rusted Out 2004 Silverado

Can a refrigerant be added to a Silverado?

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Silverado 2500 HD consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

How do you add Freon to a Chevy Silverado?

How to add freon to your 2004 Chevrolet Silverado 1500: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

Where was the 2005 Chevy Silverado 1500 Z71 purchased?

No accident or damage reported to CARFAX. 1st owner purchased on 10/29/04 and owned in MD until 04/02/19 • 2nd owner purchased on 07/03/19 and owned in PA until 06/11/21. 1st owner drove an estimated 9,091 miles/year • 2nd owner drove an estimated 18,765 miles/year.

When was the last serviced Chevy Silverado 1500 Z71?

Last serviced at 151,572 miles in Landisburg, PA on 08/03/20 • Vehicle serviced • Safety inspection performed • Emissions or safety inspection performed. No accident or damage reported to CARFAX.

Where is the air conditioner compressor in a car?

Checking to see if the compressor clutch is engaging is a simple visual inspection. The compressor is usually located towards the front of your engine, just inside the grill of your car. Your car should be running with the AC on to check the compressor clutch. The compressor looks like a small motor with a large wheel on the end.

Why is my air conditioner not working in my car?

A blown fuse can cause your AC to stop working. Check all of the vents. Be sure that air pressure is coming out of the vents that you have selected. Move the vent selector to see if the air moves to the proper vents.

Where is the mode actuator on a 1995 GMC c1500?

This 1995 GMC C1500 came in with the complaint that the air would blow from everywhere except the front vents. In using the controls, the air flow would adjust from the defrost to the floor. All other functions were okay as well. The mode actuator is located under the driver’s side of the dash, above the gas pedal.

How to add Freon to a 1996 Chevrolet C1500 suburban?

How to add freon to your 1996 Chevrolet C1500 Suburban: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure. In addition to cooling, freon lubricates the compressor when it runs. Advance Auto coupon for 20% off entire order: KIOSK20 Author

Why is my Chevy c1500 suburban blowing hot air?

When the air conditioner in your 1996 Chevrolet C1500 Suburban starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

Can a refrigerant be added to an A / C system?

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your C1500 Suburban consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

What to do if your Silverado air conditioner is not working?

Locate the red 10 amp fuse marked A/C COMP and remove it. If the metal ribbon within the fuse appears burnt or broken, replace the fuse. If the fuse is okay, the next suspect is the air conditioner relay. This relay is also located in the fuse box, though there’s no visible indicator to verify that it’s in working order.

Why is the a / C on my GMC truck not working?

So I took my truck to a mechanic to look at the a/c. It runs and gets somewhat cool but does not get cold. Not even cool enough in 85 degree temps to be comfortable. He checked the freon levels and they were actually high so he got it to the normal levels. No leaks. He checked the filter and it was good but went ahead and replaced it.

Is the a / C on my GMC Silverado 5.3L?

Also truck is a 2003 silverado 5.3L Click to expand… There is a safety precaution to keep from burning up the pump/compressor when the freon is low, the relay won’t lock over but after you read it you have to jump the relay with a piece of wire to kickstart it and from there on it’s fine as long as it keeps pressure and there is no leak.

I have a 1996 Chevy Silverado. The compressor is good and the pressure switches are new. They A/C works if I connect a hot wire to it but it constantly kills my battery.

Why is the AC not working on my Chevy Silverado?