Trailblazer ac pressure. The low side is about 50 psi when this occurs.
Trailblazer ac pressure Am I dealing with a bad compressor? Would this Why is my AC not blowing cold in my Chevy Trailblazer? The most common reasons a Chevrolet Trailblazer ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. com FREE DELIVERY possible on eligible purchases Customer: My A/C is not working on my 02 Chevy Trailblazer. Apr 2, 2025 · Is your car’s AC blowing warm air instead of a refreshing chill? Understanding your AC system’s refrigerant pressure is key to diagnosing and fixing the problem. When the pressure gauge is dropping, it's on, pressure rising off. The other day it randomly quit blowing cold while I was driving. Jun 28, 2012 · so i have read so many threads and all i kept reading is that i could disconnect and remove the valve or pressure switch on the drier that big silver can that gets really cold when the ac is running so i went to remove it because i read that it could be removed to replace it without loosing any Low prices on AC Low Pressure Side Switches for your Chevrolet Trailblazer at Advance Auto Parts. I am having trouble pin pointing the problem. I've seen bad switches that shut off the compressor too soon, which causes poor cooling. Any one ever had these replaced or did it themselves??? Thats on the 2005 TrailBlazer EXT 5. But the compressor does go off and on. Equip cars, trucks & SUVs with 2004 Chevrolet Trailblazer A/C Switch from AutoZone. Jun 1, 2011 · When I turn my air conditioning on it blows cold for about a minute or two and then the air starts to turn warmer. 3 engine. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. Chevy Trailblazer Air Conditioning Parts Diagram For effective air conditioning maintenance and repair in your Chevy Trailblazer, a clear understanding of the system’s components is crucial. Apr 25, 2025 · Common Symptoms of a Faulty AC Pressure Switch A faulty AC pressure switch can significantly impact your vehicle’s air conditioning performance. May 17, 2012 · Need to recharge the system. Find aftermarket and OEM parts online or at a local store near you. I know it does for refrigerant capacity and oil capacity. Order your parts online or pick them up in-store at your local Advance Auto Parts. Genuine Chevrolet Part - 13587668 (13502759). Sep 20, 2007 · When the pressure and temperature are too low, the compressor is switched off. After a couple of minutes it was reading 90 psi on the low side and 350+ on the high side. Repairing or maintaining an air conditioning system isn’t just for the pros; it’s something we can tackle together. Get the wholesale-priced Genuine OEM GM HVAC Pressure Switch for 2006 Chevrolet Trailblazer at GMPartsGiant Up to 45% off MSRP. That’s not enough information to diagnose a problem. How to add freon to recharge the ac system in a 2006 Chevrolet Trailblazer LT 4. They seem to be on top of the frame. in this how-to video May 5, 2019 · Heya fellas, I have an '04 Envoy XL with a chonky 203k miles, and the A/C has gone bad. A friend gave me advice, that does not go more than 4000 rpm , and the compressor will work ok . Sep 18, 2009 · After confirming AC charge level, new low pressure switch, and re-flashing control module for new parameters, GMC could find no problems and sent me on my way after charging me $140. 2 6 02 Jun 17, 2012 · Found leaks on both sides of the air condition lines going to the back of the vehicle. Fuses are good How to add freon to recharge the ac system in a 2007 Chevrolet Trailblazer SS 6. The AC duct temperature never seems to get as cold as it should. One of the primary problems reported by users is the AC unit failing to blow cold air, which can stem from several potential causes. Problem continued. The compressor still will not cycle on. Repair the HVAC system of your 2007 Chevy Trailblazer with our superior-quality A/C and heating parts to maintain comfortable temperature inside the cabin. She took a whole can to the Equip cars, trucks & SUVs with 2003 Chevrolet Trailblazer A/C Hose Assembly from AutoZone. It is the red/black wire at this sensor that should have 2-3 volts. Found a cut wire at the low-pressure switch, and installed a new pigtail with no change Low prices on AC Refrigerant Pressure Sensors for your Chevrolet Trailblazer at Advance Auto Parts. I finally got fed up with it and sent it to local Chevrolet dealer. The click is the AC compressor turning on and off. Aug 27, 2012 · Just today I edited the Torque Pro extended pid for AC High Pressure so it now works on my 2002 4. 2I6 engine? It does have rear heat and air, but I don't know if that matters for the pressure readings. Save time and money with our rear AC line, over OEM replacement options. The gauge worked fine on another vehicle We currently carry 1 AC Refrigerant Pressure Sensors to choose from for your 2004 Chevrolet Trailblazer, and our inventory prices range from as little as $54. 0L V8 in this how-to video Apr 25, 2025 · If your car’s air conditioning system is giving you trouble, learning how to jump an AC pressure switch can be a practical, hands-on solution to get your AC blowing cool air again. com Our R-134a and R-1234yf air conditioning system pressure charts are a helpful tool for interpreting pressure readings when recharging with A/C Pro®. If either side’s pressure gets too high or too low, it will shut off the power sent to the AC compressor and disable the air conditioning system. The on/off cycle is controlled by a switch, and I don't remember (in this platform) if the switch is on the accumulator (silver can, 2 larger hoses going to it) or the low pressure line. Compare 2006 Chevrolet Trailblazer AC Low Pressure Side Switches brands. Check prices & reviews on aftermarket & stock parts for your 2008 Trailblazer AC High Pressure Side Switches. Oct 1, 2024 · So I called around to my local shops and none of them do AC work so im stuck with either figuring this out myself or paying the dealership which i dont have the cash for atm. Low prices on AC High Pressure Side Switches for your Chevrolet Trailblazer at Advance Auto Parts. I decided to swap an A/C actuator to see if it would fix the problem, it did not. I cannot thank everyone enough. They seem to be a single use valve, not especially user friendly. Come join the discussion about performance, modifications, troubleshooting, towing capacity, maintenance, and more! Apr 6, 2018 · A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. How Can I Diagnose and Fix Intermittent AC Compressor Cycling on My 2003 Chevy Trailblazer? Mar 26, 2022 · How to recharge AC refrigerant in Chevy TrailBlazer There are two ports in the air conditioning system of TrailBlazer. Think about how frustrating it is on a hot summer day. Check the wires to that. Mar 18, 2012 · My AC compressor is not getting power. Shop 2002 Chevrolet Trailblazer Air Conditioning Parts at the best prices from Advance Auto Parts. to/2QmNBri Check out our Amazon Store for the tools and parts that we use Jul 14, 2010 · The AC pressure on my 2004 Envoy when first started goes to 450 psi and trips high pressure switch. One of the most frequently encountered problems is a complete failure of the air conditioner to function, along with complaints of insufficient cooling or the unit blowing only warm air. I found the ac Jul 2, 2020 · Hi everyone. Find the lowest prices Chevrolet Trailblazer aftermarket & OEM Air Conditioning Parts. Sep 23, 2009 · I discovered that there is increased pressure in the system or the there is a problem in the high -and- low pressure sensor and switch but i buy the low switch from the dealer but the high pressure sensor is not available . ' Before recharging, ensure the engine is off and the system is depressurized. Its tough to gauge just by pressure because it is a real dynamic thing with humidity but normally at least here you'll see between 40-50 psi on the low side and 170-220 on the high See full list on wheelsjoint. These parts include the compressor, condenser, evaporator, expansion valve, and refrigerant. Jul 8, 2016 · I tried jumping a low pressure switch which did nothing I jumped the AC relay and was able to get these readings on my manifold set with the clutch engaged. in this how-to video Aug 10, 2017 · Can someone show me what the plug looks like on the sensor on the high pressure line near the A/C compressor as well as how the wiring is run? Long story short, but I am trying to locate this plug and wiring as I am looking to put A/C back on the TBSS after a hiatus. It’s like trying to diagnose your overall health How to add freon to recharge the ac system in a 2007 Chevrolet Trailblazer LS 4. But, I also noticed that even though I have the temps set to cold and vent switch set to dash vent, the air is warm and blowing on the windshield out of the defrost vents. Turns out I was low on refrigerant and The low pressure A/C port on a 2005 Chevy Trailblazer is located on the larger diameter aluminum tubing between the compressor and the evaporator. A/C Line Set. Jul 6, 2017 · Hi, My 2006 trailblazer has not had a functioning AC since I bought it last summer. Anyone ever hear of this before or have any suggestions? Shop 2006 Chevrolet Trailblazer Air Conditioning Parts at the best prices from Advance Auto Parts. Sensor. Low prices on AC Compressor Pressure Switches for your Chevrolet Trailblazer at Advance Auto Parts. How to add freon to recharge the ac system in a 2008 Chevrolet Trailblazer 4. My 2003 Trailblazer's air conditioning blows cold air. Just manual temp control dual zone. We’ll cover everything from refrigerant types and how to use a In this video, I show you a few simple tests I used to narrow down the problem causing my air conditioning not to work on my 2003 Chevy Trailblazer Extended. The Jun 29, 2020 · Does anyone know, or can provide a link to, the proper low and high side readings for a 2004 Trailblazer with the 4. One of the most obvious signs is warm air blowing from the vents instead of cold air. Nov 16, 2023 · Buy 1551343 AC Pressure Sensor Switch, 15-51343 13587668 Air Conditioning Refrigerant Pressure Sensor, Compatible with 2002-2021 Chevy Suburban, 2003-2020 GMC Sierra, HVAC Pressure Transducer: Compressor Refrigerant Pressure - Amazon. Common signs of failure include a bad compressor or lack of AC. The other access port is the High Side port and is located under the shroud on top of the radiator/condenser area in the left front of the engine compartment. At Advance Auto Parts, we offer an AC Low Pressure Side Switch specifically for the 2003 Chevrolet Trailblazer Ext, ensuring a perfect fit and lasting durability. The refrigerant pressure sensor is separate and is a 3 wire sensor located near the compressor on the high side line. Check prices & reviews on aftermarket & stock parts for your 2002 Trailblazer AC High Pressure Side Switches. I have done the following: 1) checked all relays and fuses. Electro-mechanical fan is engaging, took it for a drive to get airflow over the condenser with no change. Choosing to shop with Advance Auto Shop 2003 Chevrolet Trailblazer Air Conditioning Parts at the best prices from Advance Auto Parts. Does anyone know where I can find this part in my engine? A/C High Side Pressure Switch - 2002-2009 Chevrolet Trailblazer - GPD 3689-02944515 Review Fitment Notes Part Number: 3689-02944515 Brand: GPD How to add freon to recharge the ac system in a 2004 Chevrolet Trailblazer EXT LT 4. Apr 4, 2022 · The most common causes for AC blowing hot air in Chevy TrailBlazer are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Find aftermarket and OEM parts available for delivery or pickup at a store near you. My 2004 wouldn’t blow cold air so I started with the r134a level, relays, and fuses. If you have access to a Tech 2, it will give you all the info you need as to what's wrong. Another sign to watch out for is the AC system’s inability to cool the car properly. Jan 30, 2025 · Many owners of the 2008 Chevrolet Trailblazer have reported issues with its air conditioning system, making it a common concern among drivers of this vehicle. Get a free detailed estimate for a repair in your area. This article is broken down into these three sections to help save you time repairing your Trailblazer's broken AC system: Jan 30, 2025 · 2004 Trailblazer Air Conditioner Problems If you own a 2004 Chevrolet Trailblazer, it’s crucial to be aware of common air conditioning issues that can significantly affect your driving experience. Jul 3, 2018 · Understanding Normal AC Pressure Gauge Readings Learn how to diagnose your car’s AC using 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 only see pressure on the system’s suction or low side. If the pressure My 2002 GMC Envoy is having A/C problems. Jun 26, 2020 · Hello, I am trying to diagnose and AC issue. com offers the great deal for genuine GM parts, 89040362. Oct 3, 2022 · If your Chevy Trailblazer's AC system is not working, it can be uncomfortable and downright dangerous on a hot day. Pressure. Here is a list of what I have done to trouble shoot this: I hooked up some manifold gauges, and checked static pressure of the system and compared it to a 134A chart. Feb 25, 2015 · 2006 TB short wheelbase, 270,000km, 4. Our rear/auxiliary air conditioning high pressure line for the 2002-2009 Trailblazer and Envoy(extended only) are better than and less expensive alternative to replacing the factory aluminum lines. Jul 13, 2021 · Hello all, 2004 Envoy Xl owner, I wanted to know if anyone knows what the pressures should be for a properly operating A/C system. Switch,A/C Cycling for $40. in this how-to video How to fix the compressor. Jul 28, 2025 · TB1750RLH Aux. There are A LOT of issues that can cause your vehicle's air conditioner to fail. Please help me out and smash that subscribe button!!! Recharging The Blazers AC -- Tuner Things EP:05 So not much going on today just recharging my Blazer's AC system. com. May 8, 2014 · +1 what Roadie said. This was a 2006. in this how-to video Aug 13, 2020 · Is there any schrader type replacement valve for the ball type high side pressure valve? I had one leak, replaced it, the new one is leaking too. Additionally, some drivers have noted unusual This typical GM air conditioning pressure switch monitors the refrigerant pressures and if there's a problem it'll shut down the compressor in order to protect it. Feb 8, 2012 · I'm having some trouble with my air conditioning on my 2003 Trailblazer. 69. All fit 2002-2025 Chevrolet Trailblazer and more. Next I checked the pressure which seemed ok and not like it had Maintaining the performance of your 2003 Chevrolet Trailblazer Ext starts with choosing the right parts, and a high-quality AC Low Pressure Side Switch helps ensure a reliable and efficient vehicle. Jul 6, 2024 · I recently replaced the ac comepressor on my Chevy trailblazer and got the ac working again. Aug 18, 2013 · These will cycle off when hi side pressure is too high, and too much refrigerant will definitely cause that (if it does cycle off at 3000RPM without cooling the car, just let some Freon out to drop hi side pressure). How to remove and replace air conditioning compressor. My low pressure is high I think at between 50-55, and my high pressures are low around 140-150, and the needle is bouncing. 2 engine, with no rear AC. I found something Jul 26, 2019 · Chevy Trailblazer Air Conditioning Not Blowing Cold: Causes Here are the most common causes of an AC system not blowing cold in the Chevy Trailblazer: Lack of Refrigerant Your Trailblazer’s air conditioner will not work if the refrigerant level is too low. A 2003 Chevrolet Trailblazer Air Conditioning Refrigerant Pressure Switch Replacement costs between $177 and $187 on average. I have read many posts trying to fix my A/C issue but have had no success. . In fact, most compressors won’t even cycle on without the right amount of refrigerant pressure (this saves them from eating themselves Oct 17, 2023 · MOTOKU Air Conditioner Pressure A/C Clutch Cycle Sensor Switch for Chevrolet Astro Tahoe Silverado Suburban Express Avalanche Trailblazer for GMC Safari Sierra Savana Yukon Envoy for Cadillac Escalade Share: Mar 12, 2021 · The air conditioning is a blessing, especially in hot temperatures. All parts are backed by the GM's warranty. Where do I plug the can in at? Is it the valve under the plastic shroud by the radiator or the other one ? Sent using Tapatalk Jul 11, 2012 · The AC port on the accumulator is the Low Pressure (LP)connection to the system. 74. Do you still sweat while driving your Chevy TrailBlazer? Your air conditioning system no longer cools properly? This can have different causes. Apr 4, 2024 · Understand normal AC pressures R-134a for accurate diagnostics. The mechanic at the shop was able to connect his scan tool and activate the Shop 2007 Chevrolet Trailblazer Air Conditioning Parts at the best prices from Advance Auto Parts. My Trailblazer has the i6 with a 4-speed auto, and Equip cars, trucks & SUVs with 2008 Chevrolet Trailblazer A/C Switch from AutoZone. Switch. GM, CHEVY, Chevrolet, 2003 2004 2005 2007 2008 AC 4. So far I have verified it has pressure in the system (tried to add an AutoZone bottle but saw the system was already full). Feb 14, 2025 · The summer sun beats down, the asphalt shimmers, and the inside of your Chevy Trailblazer feels less like a comfortable cabin and more like a mobile sauna. Jan 30, 2025 · In summary, if you are encountering air conditioning problems in your Chevy Trailblazer, addressing issues such as refrigerant levels, compressor function, and system leaks with professional help is vital to restoring comfort in your vehicle. Chevy TrailBlazer – (photo by Chevrolet) The most common causes that hinders normal operation of air May 25, 2011 · A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. I have to get another A/C control The air conditioning system in your Chevy Trailblazer consists of several key components that work together to cool the air inside your vehicle. One is labelled H for high-pressure and the other one is labelled L for low-pressure. in this how-to video Mar 2, 2023 · AC pressure switches monitor the low and high pressure sides of the air conditioning system. This original equipment A/C clutch cycle switch is a GM-recommended replacement for your vehicle’s original component and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Rear AC Line Set to fit 2002-2009 Trailblazer - Envoy - Ascender. Ships from GM Parts Outlet, EASTPOINTE MI Compare 2008 Chevrolet Trailblazer AC High Pressure Side Switches brands. Check prices & reviews on aftermarket & stock parts for your 2006 Trailblazer AC Low Pressure Side Switches. It typically has a black or blue plastic cap labeled 'L' or 'Low. Check prices & reviews on aftermarket & stock parts for your 2004 Trailblazer AC High Pressure Side Switches. When the AC was turned on, the compressor would not cycle, which prompted me to assume it was low on refrigerant. Shop wholesale-priced OEM Chevrolet Trailblazer HVAC Pressure Switches at GMPartsGiant. 2L 6 Cyl. This guide provides a comprehensive overview of AC pressure charts for both R-134a and R-1234yf refrigerants, equipping you with the knowledge to keep your car cool. The freon is at 65 psi and I'm not sure if that is enough pressure to satisfy the pressure switch. 2. Jun 2, 2016 · Especially considering the AC system not turning the compressor on is commonly caused by any problems ranging from the fusebox itself, the AC controller module, relays, pressure sensors, temperature sensors, compressor, clutch, Freon leaks etc Aug 12, 2016 · The AC pressure switch protects the AC system from pressure that's too high or low. GMPartsGiant. Check prices & reviews on aftermarket & stock parts for your 2003 Trailblazer AC High Pressure Side Switches. At start up the low pressure is at about 40 psi low side and 175 and climbing on the high side. After several of these cycles it settles in to 210 psi on HI & 35 psi on Low. May 12, 2024 · Hello, I have been a member for a while and have been able to fix every issue on my 2003 i6 Trailblazer because of the members here. Compare 2004 Chevrolet Trailblazer AC High Pressure Side Switches brands. Open the hood of your TrailBlazer. Ensure your vehicle's air conditioning system is functioning properly. I have a few plugs sitting In this comprehensive guide, we dive into the most common air conditioning problems faced by Chevrolet Trailblazer owners and provide a clear, step-by-step approach to understanding and diagnosing Compare 2002 Chevrolet Trailblazer AC High Pressure Side Switches brands. Compare 2003 Chevrolet Trailblazer AC High Pressure Side Switches brands. Tried to recharge it with a couple cans of R134A and it seems to hold it in, but the compressor clutch won't engage to send the refrigerant through the system. Aug 25, 2021 · I have a 2003 trailblazer with the 4. The compressor is not engaging. Come join the discussion about performance, modifications, troubleshooting, towing capacity, maintenance, and more! Mar 23, 2012 · I'm trying to change my a/c high side pressure switch in my 2003 trailblazer. 00. What these are and what you can do about it, we explain in this article. Get Yours Today! We have the best products at the right price. So I checked whether the ac clutch was engaging or not and it wasn’t. Mar 10, 2007 · Or will I have to let the AC shop check the level? Click to expand Many automotive a/c units have a low pressure switch which prevents your compressor from running when the system pressure drops below a certain point. Chevrolet Trailblazer. I found a post on here that said all wiring diagram PDFs were uploaded to a resources section but I can’t seem to locate that section on the forums. How do I reset my cooling system? How Do You Manually Reset Your AC? Turn Off The Air Conditioner. Check our parts available online or at our shops near you. However, the relay isn't passing power to pin 87 when switching on the AC 2) verified continuity from relay (pin 87) to the dark green wire at the compressor 3) verified correct voltage to pins 30 How to add freon to recharge the ac system in a 2002 Chevrolet Trailblazer LS 4. Nov 23, 2019 · There's a high pressure switch on the A/C lines near the compressor. My husband hooked a bottle of freon with gauge to it to see if it needed a little charge. I took it to a shop, and they vacuumed it down, verified no leaks, then refilled the refrigerant and oil. I see you have an 08 and somewhere along the way the pid changed. Outside air temp around 80°, and cabin Sep 11, 2012 · Crank the car and turn the AC on full blast. Back in May we found that the ac was not pumping cold. They had it for TWO WEEKS, trying to diagnose it. Chased an A/C problem for months, and it turned out the high pressure switch was intermittent, there were corroded wires inside the insulation. I know very littler about the ac system in any car let alone trailblazers, i have googled and watched youtube videos to This will help you troubleshoot issues or make informed decisions about maintenance and repairs. 2L without the auto climate control. The low side is about 50 psi when this occurs. HOW TO TEST AC PRESSURE SWITCH ON CHEVY, CHEVROLET, GMC, BUICK, CADILLAC AC NOT WORKING Great Car Scanner: https://amzn. But it pegged the needle on the gauge all the way to high. tih solswi iux lhp pyx wbrqh hujkc gyt ogzry ujxku nsyy bfcxf arbg vsgcm rajzd