2013 chevy silverado ac low pressure port

SOURCE: AC Low Pressure location on 2004 Chevy Suburban. You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port. The valve is covered a plastic cap covering it. Near the compressor you find two ports, the high port and low port.

2013 chevy silverado ac low pressure port. A dirty cabin air filter could be the culprit. 2013 Chevrolet Volt 1.4L 4 Cyl. DRLs are on more than your headlights. They burn out faster and should be replaced regularly. 2013 Chevrolet Volt 1.4L 4 Cyl. Driving with your phone pressed against your ear is illegal in many places.

Once you find the 2008 Silverado 2500 HD AC low pressure port cap, hook up the can of refrigerant 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. Typically the AC recharge kit you buy will have enough capacity to add enough freon to ...

CHEVROLET CRUZE AC LOW PRESSURE PORT LOCATION. HIGH PRESSURE PORT LOCATIONIn this video we will show you where the ac low pressure port is located on Chevrol...SOURCE: AC Low Pressure location on 2004 Chevy Suburban. You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port. The valve is covered a plastic cap covering it. Near the compressor you find two ports, the high port and low …Here is a quick video on how to locate a low side air conditioning service port. This is what you need to locate to add refrigerant to your AC system. If you...2015 gmc acadia ac recharge line. Ac low pressure switch location and how to replace itLearn about 78+ imagen 2001 jaguar s type ac low pressure port How to charge the a/c on a 2009 ltzCannot find the low ac …Tahoe leaking image0 2015 chevy tahoe low pressure port ac 92 best chevrolet low pressure ports images on pinterest Tahoe low side chevy yukon escalade gmc cadillac z71 tahoeyukonforum. ... 2010 Tahoe A/C Issue - 1999-2006 & 2007-2013 Chevrolet Silverado & GMC Check Details

I don't know if the Silverado has a different A/C system but as can be seen from this picture there is no pressure switch or a place for one on the drier. It has the low side port but that's it. Im guessing its down near the compressor.Computer says: not worth it. You know you’re an industry in distress when your customer base is the same size as it was nearly three decades ago. Especially when, judging by capaci...Are you preparing to take an EKG exam? If so, you’re likely feeling a bit of pressure to do well. After all, passing the exam is essential for anyone who wants to pursue a career i...The AC low pressure service port is directly behind the engine, about 5-6 inches back, in the center. Look for the two silver pipes coming out of the firewall. The larger silver pipe has the AC low pressure service port sticking out the top with a black dust cap. You can't really mess up the connections, as the low pressure port diameter is ...30 Aug 2022 ... Not sure how long this will last, but this video shows how I got the A/C to blow cold again in my 2015 GMC Yukon. Eliminated the need to go ...Jun 6, 2022 · KEN L. MASTER CERTIFIED MECHANIC. 42,904 POSTS. The small line will be the high side for sure, I would look for a tag near the A/C to see if the refrigerant is 1234 Yf. This truck can be either, but since the connectors are the same I'm thinking 1234 Yf. I don't think a 134r gauge set will work. Was this. The low pressure port is against the fire wall, look straight back and you will see it. SOURCE: process to change fuel pump on 2001 chevy silverado 1500. take the six bed bolt loose and then take three buddies slide the bed back put in the new pump slide it back n place and put the bed bolts back in. if u drop the tank u can easily break the ...92 best images about chevrolet low pressure ports on pinterestHow to recharge a/c on a 2001 chevy silverado 1500 4.8 v8 Low chevrolet port silverado ac pressure side 2004 1500 recharge 2003 malibu r134a …

How to: recharge a/c in chevrolet silverado Silverado recharge ac chevrolet procedure ports 2001 chevrolet silverado 1500. How To: Recharge A/C in Chevrolet Silverado | NewGMParts.com. Check Details. How to Add Refrigerant to a 2014-2018 Chevrolet Silverado 1500 - 2015. Check Details. 2001 Chevrolet Silverado 1500 …2015 gmc acadia ac recharge line. Ac low pressure switch location and how to replace itLearn about 78+ imagen 2001 jaguar s type ac low pressure port How to charge the a/c on a 2009 ltzCannot find the low ac …The factory stereo installed in the Chevy Colorado only has an AM/FM stereo tuner and a CD player. Many aftermarket stereos, on the other hand, have auxiliary inputs, iPod control ...2008 Chevrolet Silverado 2500 HD LT 6.0L V8 Crew Cab Pickup (4 Door) 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. 2013 Chevrolet Tahoe LT 5.3L V8 FlexFuel. Add washer fluid. One of the easiest fluids to top off - learn how to open the hood and where the ...

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It could be NOT cooling for serveral other related and unrelated reasons. But, if it is in fact low on a charge, the compressor will not stay engaged for very long. Thus, you get the indication that it is not cooling as usual. When a charge is low, a low pressure status switch opens the electrical circuit to the compressor clutch.2015 Chevrolet Trax LTZ 1.4L 4 Cyl. Turbo. Transmissions that leak fluid usually have never been flushed and the seal is finally leaking. The right stop leak product can cure a lot. 2019 Chevrolet Equinox Premier 1.6L 4 Cyl. Turbo Diesel. If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb.High side pressure should be 2.2 to 2.5 times the ambient temperature. If it's 100 degrees then the high side pressure should be between 220 and 250 psi. Start by targeting the lower end of that, it's easier to add than remove. When you stop adding your low side should be between 30 and 40 psi. Like.I recently purchased a 2018 Sierra and the AC has been lacking cooling power at idle. Finally got around to looking at it and realized. #1: This R1234yf system is definitely a little different than I am used to seeing. #2: The low pressure charge port is in a pretty bad spot for accessibility. #3: That when I take my cap off the low pressure ...

Check out all of my DIY repair and maintenance tutorials for the 2015, 2016, 2017, 2018, 2019, 2020, 2021 & 2022 GM Chevrolet Colorado - https://www.paulstra...A/C Pro is the easy repair anyone can do! It only takes a few minutes, and you save a ton of money.You can find A/C Pro on the shelves of most auto parts sto...You cannot add R1234YF refrigerant to a R134a system nor can you add R134a refrigerant to a R1234YF system. R134a and R1234YF have different low pressure port types, so you should never use a recharge adapter to add the wrong type of refrigerant. Recharging your Silverado 2500 HD with the wrong type of freon can make the AC recharge cost much ...Order Chevrolet Silverado 1500 A/C Service Valve Cap online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store.“Let me be clear about this. A low carbohydrate diet is quackery,” Dr. Neal Barnard told me over the phone. “It is popular, bad science, it’s a mistake, it’s a fad. At some point w...Silverado recharge acpro tahoe refrigerant r134a10+ images about chevrolet low pressure ports on pinterest 2008 chevy silverado ac low pressure portChevrolet silverado low 1500 port pressure side 2007 recharge ports ac …R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas) Ambient Temperature °F / °C (Temperatura Ambiental) Low-Pressure Gauge (Puerto de Servicio del Lado de Baja Presion) High-Pressure Gauge (Puerto de Servicio del Lado de Lado de Alta Presion) 65°F (18°C) 25-35 psi / 172-241 kPa: 135-155 psi / 931-1069 kPa: 70°F (21°C) 35 ...Low coolant levels is all to common - top yours up today. 2019 Chevrolet Silverado 1500 Custom Trail Boss 4.3L V6 Crew Cab Pickup. See all videos for the 2019 Chevrolet Silverado 1500. How to add freon to recharge the ac system in a 2019 Chevrolet Silverado 1500 Custom Trail Boss 4.3L V6 Crew Cab Pickup in this how-to video.Tahoe leaking image0 2015 chevy tahoe low pressure port ac 92 best chevrolet low pressure ports images on pinterest Tahoe low side chevy yukon escalade gmc cadillac z71 tahoeyukonforum. ... 2010 Tahoe A/C Issue - 1999-2006 & 2007-2013 Chevrolet Silverado & GMC Check DetailsSilverado recharge acpro tahoe refrigerant r134a10+ images about chevrolet low pressure ports on pinterest 2008 chevy silverado ac low pressure portChevrolet silverado low 1500 port pressure side 2007 recharge ports ac …8.62K subscribers. Subscribed. 517. 166K views 5 years ago FORT LAUDERDALE. Two regular guys Recharging the air conditioning system on a …

Suburban Silverado Tahoe and and many other models AC line location. One wire harness is covering up the line and it's hard to find behind it so that why I m...

Aug 28, 2023 · 2008 chevy silverado ac low pressure port2001 chevrolet silverado 1500 2013 ford explorer low pressure ac port2011 chevy equinox low pressure port. Check Details. 10+ images about chevrolet low pressure ports on pinterest Step 2: Locate the low side port of the AC system: On most domestic and foreign cars, trucks and SUV's the AC system is charged by attaching a Schrader valve …The AC low pressure service port is directly behind the engine, about 5-6 inches back, in the center. Look for the two silver pipes coming out of the firewall. The larger silver pipe has the AC low pressure service port sticking out the top with a black dust cap. You can't really mess up the connections, as the low pressure port diameter is ...2003 chevy suburban: air conditioner low side service port located…. where is the air conditioner low side service port located on a 2003 chevy suburban. Both service ports are locted on a line that runs near the coolant tank to the accumulator on the fire wall. The low side is the one closest to the fire wall.If you’re looking into buying a dependable new or used truck, you’ve likely come across the 2020 Chevy Silverado in your search. The Silverado is consistently one of the most popul...Put the cap on and check the port with a soap and water solution and see if it leaks then. high pressure port is red and low pressure port is blue, or markrd L;-low or H;high. Be careful that you do not do something that will let all the freon out. as then you will have to have the system serviced professionally. cubpilot.2007 chevy silverado low pressure ac port 2013 ford explorer low pressure ac port 2014 chevy silverado ac low pressure port location. 2004 Chevy Silverado Ac High Pressure Switch Location. 2003 chevy silverado ac high pressure port 2007 chevy silverado ac low pressure port 2001 chevrolet silverado 1500. 2005 chevy …Are you preparing to take an EKG exam? If so, you’re likely feeling a bit of pressure to do well. After all, passing the exam is essential for anyone who wants to pursue a career i...

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My AC would randomly start and stop intermittently, so I ensured that the system was charged and once I was assured that it was full I checked this switch an...Dealing with low water pressure in your home? This guide explains the potential underlying problems and five simple, effective solutions for fixing them yourself. Expert Advice On ...2020. The low pressure port on Your Chevrolet Sonic is typically going to be located in the line that snakes from the compressor through the evaporator and up to the condensor on the suction side of the system. If You suspect Your system is low on freon, it's pretty easy to add refrigerant. Symptoms that You need to do this will include Your ...AC pressure gauge readings Diagnose AC pressure gauge readings How to diagnose car AC pressure gauge readings. You can’t accurately diagnose your car’s AC by using just the low-pressure gauge on a recharge kit because you’re only seeing pressure on the suction or low side of the entire system. That’s not enough information …Where is the low pressure ac port located on a 96 chevy silverado with. 2001 chevrolet silverado 1500 Chevrolet silverado 2001 recharge 1500 refrigerant r134a ports Pressure port low location chevy suburban 2007 tahoe pro chevrolet forum reply rngr. Check Details. 2001 Chevrolet Silverado 1500 - Low Side Port for A/C Recharge # Check DetailsA/c pro low pressure port location - Chevrolet Forum - Chevy. Chevrolet cruze ac low pressure port location. high pressure port Pressure port low location chevy suburban 2007 tahoe pro chevrolet forum reply rngr Port side ac chevy low silverado pressure location 1996 where suburban c1500 located air high service 2010 …I recently purchased a 2018 Sierra and the AC has been lacking cooling power at idle. Finally got around to looking at it and realized. #1: This R1234yf system is definitely a little different than I am used to seeing. #2: The low pressure charge port is in a pretty bad spot for accessibility. #3: That when I take my cap off the low pressure ...Surprised it kicked on at all. for chevy/gm trucks after 1987 psi recommendations as follows. With an ambient temperature of 70f your low side port psi should be between 32-38 psi. And for every 5degreeincrease in ambient temp your psi readings will increase by 5psi. For optimal cooling it is recommended to use the lower psi.9 Mar 2020 ... ... Chevrolet Traverse How to Test A/C Pressure Switch. AC Not Working. AC Blows Hot Air Chevrolet Silverado How to Test A/C Pressure Switch. AC Not ...Feb 11, 2013 · SOURCE: AC Low Pressure location on 2004 Chevy Suburban. You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port. The valve is covered a plastic cap covering it. Near the compressor you find two ports, the high port and low port. Chevy tahoe low pressure port ac Silverado ac 2000 tube orifice condenser dryer receiver radiator Ac chevy low 1999 pressure gmc air compressor truck 1500 high conditioning side yukon 2005 ... ports on pinterest 92 best images about chevrolet low pressure ports on pinterestHow to add refrigerant to a 2007-2013 chevrolet silverado …Top up the oil level. Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here! 2014 Chevrolet Spark LT 1.2L 4 Cyl. Add air to your tires. Properly inflated tires is the easiest way to improve fuel economy. The right tire pressure is NOT on the side of your tire btw. ….

2018 silverado 90,000 miles. a/c blow cold air when set at. 2018 silverado 90,000 miles. a/c blow cold air when set at 72. Then after 15 min blows slightly warm air. after another 20mins blows hot air. Next … read more.R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas) Ambient Temperature °F / °C (Temperatura Ambiental) Low-Pressure Gauge (Puerto de Servicio del Lado de Baja Presion) High-Pressure Gauge (Puerto de Servicio del Lado de Lado de Alta Presion) 65°F (18°C) 25-35 psi / 172-241 kPa: 135-155 psi / 931-1069 kPa: 70°F …Do you find yourself constantly frustrated with low water pressure in your home? Whether it’s a weak shower, slow-filling toilet, or inadequate water flow in your kitchen sink, low...A/C Pro is the easy repair anyone can do! It only takes a few minutes, and you save a ton of money.You can find A/C Pro on the shelves of most auto parts sto...If your Silverado was made earlier than 2001, service ports can be found on the accumulator and high-pressure hose. Important: Earlier model Silverados that use R-12 refrigerant require an adapter to connect the hose to the high-pressure port. Connect the center hose of the AC gauge to the vacuum pump. Plug the vacuum pump into a 110-volt ...Suburban Silverado Tahoe and and many other models AC line location. One wire harness is covering up the line and it's hard to find behind it so that why I m...SOURCE: Where is the low pressure line AC for Express 1500. Look for the accumulator (silver can a/c lines go to) on the passenger side of engine area. The Low side charging port cap should be on the side of the accumulator. SOURCE: 2000 chevy impala a/c low pressure port. PASS SIDE BY THE DRYER NEAR FIRE WALL.The most common causes for AC not cooling properly in Chevy Silverado 1500 are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend ...Silverado recharge acpro tahoe refrigerant r134a10+ images about chevrolet low pressure ports on pinterest 2008 chevy silverado ac low pressure portChevrolet silverado low 1500 port pressure side 2007 recharge ports ac …Jun 7, 2020 · Also check for burrs on male service port fitting, lubricate fitting. Pull snap lock ring back and depress the ball bearings inside with small screwdriver, toothpick, to make sure they are not stuck. These quick fittings have the adjustable closed/open knob to allow working with various type schrader valves. 2013 chevy silverado ac low pressure port, I recently purchased a 2018 Sierra and the AC has been lacking cooling power at idle. Finally got around to looking at it and realized. #1: This R1234yf system is definitely a little different than I am used to seeing. #2: The low pressure charge port is in a pretty bad spot for accessibility. #3: That when I take my cap off the low pressure ..., Aug 13, 2017 · 1 Answer. Low port in on the receiver dryer. It is on the passenger side close to the firewall. It is a cylinder about 4 inches in diameter and 8 inches long. SOURCE: where is the low pressure ac port located on a 2010 chevrolet silverado. On the a/c line towards the top of the engine bay. Should have ablue cap on it. , Jun 9, 2012 · I recently tried to recharge my 1994 Saturn SW2 air conditioning. The system took the charge fine, nice cool air again. Yea! On disconnecting the adapter, I heard the sound of escaping gas. I was able to place my thumb over the port and block the leak, tried reattaching adapter and removing several times, but the valve will not fully seal. Placing the cap back on the port with a small piece of ... , A/c pro low pressure port location Pressure low port location chevy suburban 2007 tahoe pro chevrolet forum rngr send message private profile posts find public reply How to add refrigerant to a 2007-2014 chevrolet silverado 2500 hd. How to Add Refrigerant to a 2014-2016 Chevrolet Silverado 1500 - 2014. Check Details, It could be NOT cooling for serveral other related and unrelated reasons. But, if it is in fact low on a charge, the compressor will not stay engaged for very long. Thus, you get the indication that it is not cooling as usual. When a charge is low, a low pressure status switch opens the electrical circuit to the compressor clutch., See also: 2009 Toyota Camry Starter. To start, park your Silverado in a level area and turn off the engine. Next, locate the low pressure AC port on the side of the compressor. It will likely have a cap that says “L” or “Low” on it. Once you have found the port, use a wrench to remove the cap. Now, take the new low pressure AC port and ..., The most common causes for AC not cooling properly in Chevy Silverado 1500 are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend ..., Follow lines from pump. High side is usually between pump and condenser. Follow lines and find second port this will be low side (refill) port. Paint or replace port caps (red high, blue low). Also, refrigerant in system determines port size (R12 or R34). The ports on my 2005 silverado are on the same line,which is very confusing but, in ..., replaced ac compressor, orifice tube, accumulator, condenser, fan clutch, flushed ac system, and cleaned radiator fins. both pressures are still high and not cooling at idle. Chevy Mechanic: You said that one line was cold and one line was warm at the firewall going to the evaporator. If that is still the case, then the evaporator is clogged or ... , Are you preparing for an upcoming entrance exam? Whether it’s for college admissions, professional certification, or graduate school, the pressure to perform well can be overwhelmi..., This quick DIY video shows owners of the 2016, 2017, 2018 and 2019 Chevy Cruze sedan the location of the A/C system's low pressure port (valve) used to recha..., Once you find the 2013 Silverado 1500 AC low pressure port cap, hook up the can of refrigerant 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. Typically the AC recharge kit you buy will have enough capacity to add enough freon to ..., 2013 Chevrolet Traverse LS 3.6L V6. Oil level check. Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary. 2013 Chevrolet Traverse LS 3.6L V6. See all videos for the 2013 Chevrolet Traverse. How to add freon to recharge the ac system in a 2013 Chevrolet Traverse LS 3.6L V6 in this …, 7 May 2018 ... GMC / Chevy C1500 A/C Evacuation and Freon recharge procedure after replacing the Condenser and A/C Pump. Approximately 6 to 7 12 oz cans of ..., replaced ac compressor, orifice tube, accumulator, condenser, fan clutch, flushed ac system, and cleaned radiator fins. both pressures are still high and not cooling at idle. Chevy Mechanic: You said that one line was cold and one line was warm at the firewall going to the evaporator. If that is still the case, then the evaporator is clogged or ... , Malibu add 2008 chevrolet low pressure freon 2010 refrigerant port recharge saturn aura airHow to recharge air conditioner on chevrolet cruze. chevy cruze ac system refill Low port chevrolet malibu pressure ports silverado recharge side r134a 2005 equinox refrigerant92 best images about chevrolet low pressure ports on …, 18 Sept 2021 ... ... charging port. Ensure it's snug. When the ... If the pressure is very low in the system, the ac compressor will not activate. ... © 4DIYers 2013 ..., 2004 GMC Yukon SLT 5.3L V8. Replace the front turn signal. If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb. 2008 Chevrolet Silverado 1500 LT 5.3L V8 Extended Cab Pickup (4 Door) Oil level check. Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary., AC Recharge on my 2015 Chevy Silverado 1500. I will go over the basics of adding R134a refrigerant, leak detector dye and AC Stop Leak. Thank you for visit..., Let the AC system run for about 2 minutes, then turn the valve of the R-134 refrigerant/dye can to the "open" position. Step 5: Activate the canister and add dye to the AC system. On your Schrader valve, you should have a pressure gauge that will display the pressure of the refrigerant., Answered in 15 minutes by: Chevy Mechanic: Dan. Dan. Category: Chevy. Satisfied Customers: Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database. Verified. Hello, my name is***** is located near compressor/ oil filter. Here is a picture, you can access from underneath., 10+ images about chevrolet low pressure ports on pinterest Port side ac chevy low pressure silverado location 1996 where suburban c1500 located air high service accumulator 2010 1997 they 10+ images about chevrolet low pressure ports on pinterest Low pressure ac port chevy silverado. Fix Workshop. Home;, Web web 2013 chevy silverado 5.3; The pressure control solenoid 4 is part of the control solenoid valve assembly which. Web your low pressure port either on receiver drier or look for small evaporator line with blue cap going into firewall to the evaporator. ... Low Pressure Ac Port Chevy Silverado Property & Real Estate for Rent, A check engine light can be cleared with a simple fix or it could be a major problem - find out now! 2019 GMC Sierra 1500 5.3L V8 Crew 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. 2019 GMC Sierra 1500 5.3L V8 Crew Cab Pickup., Aug 14, 2023 · A:The A/C low-pressure switch is usually on one of the air conditioning pipesthat’s attached to each side of the A/C compressor. The low-pressure side is typically the one with the smaller pipe. A/C high pressure switchesare typically used to prevent compressordamage. The A/C low-pressure switch cycles the compressor to prevent evaporator ... , With its 1950s styling, the 1957 Chevy is a timeless car. This article will show you how to draw this cool classic car in just five simple steps. Advertisement The 1957 Chevy is on..., How to: recharge a/c in chevrolet silverado Silverado recharge ac chevrolet procedure ports 2001 chevrolet silverado 1500. How To: Recharge A/C in Chevrolet Silverado | NewGMParts.com. Check Details. How to Add Refrigerant to a 2014-2018 Chevrolet Silverado 1500 - 2015. Check Details. 2001 Chevrolet Silverado 1500 …, Once you find the 2004 Silverado 1500 AC low pressure port cap, hook up the can of refrigerant 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., Any pressure below 25psi and compressor will not stay on. Surprised it kicked on at all. for chevy/gm trucks after 1987 psi recommendations as follows. With an ambient temperature of 70f your low side port psi should be between 32-38 psi. And for every 5degreeincrease in ambient temp your psi readings will increase by 5psi., How do you recharge AC in a 2015 GMC Sierra 2500 HD? The low side AC port location is the first thing to find when you are looking for how to put freon in a car. Once you find the 2015 Sierra 2500 HD AC low pressure port cap, hook up the can of refrigerant to the low pressure port. When your compressor kicks on, add freon to the correct pressure., Aug 14, 2023 · A:The A/C low-pressure switch is usually on one of the air conditioning pipesthat’s attached to each side of the A/C compressor. The low-pressure side is typically the one with the smaller pipe. A/C high pressure switchesare typically used to prevent compressordamage. The A/C low-pressure switch cycles the compressor to prevent evaporator ... , 169 posts · Joined 2020. #9 · Jul 11, 2020. I have a 2011 silverado, same truck same engine. As far as I can tell, this hvac system only has ONE pressure sensor and its located down near the compressor on the high pressure line. They stopped putting the low pressure on the drier some years before apparently., There are 2 ports (both a large and small size) on the metal line running from the evaporator to the condenser, but I can't find a port between the compressor and the …