I am, over all, worried about final cost. Here is the rear end sagging, and the new air spring helper installed. But the moment they leave pit lane, the settings cant be changed. I had Bilsteins put in for $200 and the truck rides great. 5) Turn ignition off. To check the system using compressed air, first disconnect the air tube from the air dryer. Why does it occur with specific vehicles? Select Vehicle. Hi all! The damping forces are modified utilizing electrical actuators located internally within the shock absorbers. Any ideas? This dryer should be cleaned and serviced during shock or compressor replacement. Second, check the pressure switch. If the digital multimeter reads infinity, then the air strut is working properly. In this video, Andrew Markel covers why the old-fashioned knee test is not valid for late-model cars and trucks when inspecting shocks and struts. The system also releases air out of the system when I turn the ignition off, which lowers the vehicle by about half to an inch With your Autoride system, I would say the key is to make sure that the compressor stops running after a few seconds of pumping; if it runs all the time or runs periodically every few minutes (while the engine is running with the vehicle parked), then I would be concerned about a possible leak in the system Let's hope this is not the case as each replacement OEM Air Shock is in the $300+ range ouch! the compressor should be located behind the driver's side, rear wheel. Additionally, the compressor may make strange noises or stop working altogether. Technical Resources for diagnosing and servicing undercar components, The Benefits of Using OE-Quality Hub Units For Ford IWE-Equipped Trucks, Benefits of Using Brake Parts Designed to Work Together, How To Answer Customer Ride Control Questions, GM Rattle or Creak Noise From Front Suspension. The humming sound is coming from your on-board compressor, a part of your auto leveling system. In addition to the 40 amp fuse that directly powers the compressor, there is also a fuse that powers the primary side of the compressor relay. Be sure to leave yourself plenty of room to strip the wires and attach it to the new compressor. My total bill by the time everything was fixed, $2600. Image Credit: 8mb.video. Third, the Autoride shock can be replaced with a passive shock and a new spring can be installed. The drive is a only a short distance but am I setting myself up for persistant autoride suspension issues? If you are not able to hear the compressor running or see the air springs inflate, it is possible that the compressor is not working properly.In this case, you will need to have the compressor checked by a mechanic. Either I have no bleed down or my pump just doesn't work. Each time the compressor is activated, the ESCM commands ON the exhaust valve for 1.5 seconds to release air from the compression chamber in the compressors cylinder head ensuring low motor current draw upon compressor activation. The compressor is not kicking on at all and I want to check it for a good power source and ground, and I see multiple level sensors that I want to test as well. Picture Information. This can be done by turning on the compressor and letting it run for a few minutes.If the compressor does not turn on, or if it shuts off after a few seconds, then it is not working properly. I have a 2007 Sub 1500 LTX, and have the 3 huge factory service manuals which carry all of the GM/GMC/Chev/etc iterations of Suburbans and Tahoe. I just put Z71 replacements on all four today. Parts wise for both rear autoride shocks are around $600 at your local GMC dealerships (its about $100 less per shock if you get them other than your local GM dealerships), as price for the front pair its the same story; so for all 4 shocks, the parts price is at about $1200, that means the remaining $1200 are mostly for labor which in my opinion is a bit too pricey. 2. The compressor should kick in when you hold in place after a few seconds. One mistake to avoid when replacing struts is reusing the bearing plates or upper mounts. SKU # 993663. Put 13v battery voltage directly to it, see if it runs, make sure you put + to the +, it's a dc motor. Drive Belt Checklist: What Are You Missing? Attach the air tube to the pressure gauge on the side opposite the toggle valve. Automotive Network, Inc., Copyright 2023, Avalanche | C&K | Silverado | Suburban | Tahoe. Apply service air pressure to the service valve and pressurize until the pressure gauge reads 550 kPa (80 psi). (adsbygoogle = window.adsbygoogle || []).push({}); Hi everyone- I have a 2001 Tahoe with autoride/leveling (105k). Attach the air tube to the pressure gauge on the side opposite the toggle valve. Autoride comes standard on the GMC Yukon Denali and Yukon XL Denali. I just pulled out my factory shocks, and they measured 2.2 Ohms. Mine was doing that and it was a leak. Every time the compressor is activated, the ESCM commands the exhaust valve ON for 1.5 seconds to release air from the compression chamber in the compressors cylinder head, ensuring low motor current draw upon compressor activation. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Ensure that the vehicle has a full tank of fuel or add sufficient weight to the rear of the vehicle to simulate a full tank of fuel. To isolate a leak, the system must be at pressure. The key to this is the GM Autoride rear air suspension. This is why this test should be performed only after running the compressor for a while. Apply service air pressure to the service valve and pressurize until the pressure gauge reads 550 kPa (80 psi). it is just electronic shocks. Well, let me just say that my TLC has been a perfect SUV until I had to trade it in for my current 2007 Yukon Denali. 2001 Chevy Suburban with autoride, replaced front shocks with Monrore Reflex, works great, service light for autoride on all the time, told to use resistors, wire them in line, which wires do you connect? i am getting a motor sound humm when i turn my key to the on positonand again after i crank the vehiclenowi am aware of the auto leveling systembut should i be able to hear it to a point that whoever is around turns and gives and funny stare..what can i do to silent the noise a bit. We aren't set up for buying and selling on the forums - if you want a used one, try your local auto salvage yard. There are a few different ways to test the compressor, which we will outline below.One way to test the compressor is to turn on the ignition and let the car idle for a few minutes. If the pump does have power I heard I should check a ride control sensor (I think that is what it is called) but I do not know were this sensor is and what would I check on it? Required fields are marked *. 77. It's my understanding that if you have Stabiltrac, that you should not use the Bilstein shocks since they don't have the ability to change the shock dampening that normally changes with vehicle speed if you have the OEM shocks. If so please contact me!!!!! If I could lower it an inch or so, I'd have no issue. The electronic suspension control (ESC) system independently controls each of the four shock absorbers to control the vehicles ride characteristics. Air conditioning scents can come from a host of things. Z55 is termed Autoride, and uses the Electronic Suspension Control (ESC) system to make changes to each of the four shocks in milliseconds as you drive, adjusting the stiffness and handling of the suspension. thanks so much for the help and responses. I replaced my compressor and rear shocks in August and that fixed my SRC message on the dash. Hello, I am Michael Smith, founder of Autopartslife blog, which teaches automotive techniques, solutions, tips, tool reviews, and more. I installed a T and bypassed the compressor but I am leaking the air out almost as soon as it is pumped in. To service the dryer, remove the compressor assembly from the frame rail. It is best to take part in a contest for among the finest blogs on the web. If youre having trouble with your air suspension not airing up, there are a few things you can check. 2. Attach the air tube to the pressure gauge on the side opposite the toggle valve. You need to determine if the wet is H2o or oil. Install the new front section of the auxiliary evaporator hose into the vehicle. There are wiring inputs to every shock, with no air ride pump or input. I replaced the shocks a couple of years ago ($800+ from gmpartsdirect) since they were leaking which fixed the issue - continuous pumping. Your IP: If your car has air suspension, this switch should lower the car to its lowest setting.If you cant find a switch, look in your owners manual. Sign in or register to get started. Short video showing how to test to see if your ALC Relay in your air ride suspension is good. I have an '02 Yukon XL w/ autoride. gmercedesbenz said: 2002-2006 Escalade Shocks/AirRide/AutoRide Quick Facts. Electronically adjustable shocks and struts use conventional mono-tube and twin-tube oil-filled dampeners. 1. Just keep in mind, when your vehicle is carrying a heavy load, speed and road condition can most certainly contribute to the ware & tare of your suspension. Has anyone removed the compressor and shocks and installed shocks from a non-autoride Yukon/Suburban. . Locate the autoride compressor under the hood. The whole air ride system is made of 3 different groups of devices: The sensors, the wiring harness and the autoride unit itself. Can i disconnect the sensor and replace it with a resistor as well?I want to turn off the "service ride control" light. Of my options, the Dorman 949-001 seemed like a much simpler repair/replacement than the compressor Arnott offers, as they only provide you the compressor itself, you need to use the used one off of your truck for parts like the mounting tray, air lines, bolts, nuts etc. The key to this is the GM Autoride rear air suspension. What made these vehicles so popular (and why they remain so today) is how they handle suburban and city roads. are the shocks bad or just not getting the signal from computer? What mine has is a active electric shock valve system that uses the body to axle positions to control shock valving. As I order these, what else should I look for? My vehicle has 150K miles, and after looking at all the online data, I have replaced all 4 original shocks, this weekend, with Monroe Gas Magnums from Checker. They also said that the rear pinion seal was leaking. I just noticed about a week ago that they don't seem to work at all when loaded up now. The action you just performed triggered the security solution. The compressed air is then run through a dryer containing a moisture- absorbing chemical that dries the compressed air before it is sent to the shock absorber chambers. Good Luck. When weight is removed from the vehicle, the ESCM responds by commanding the exhaust valve ON, causing the air pressure in the shock absorber chambers to deflate. 1 answer. but front shocks seam to be dead. It will cost me in excess of $2400 to fix this. The system performs a self-test on each ignition ON cycle in which the ESCM commands the ELC relay ON, activating the compressor for 4 seconds, then monitors the position sensors signal voltage inputs to verify the compressor is functioning and the system is holding air pressure. Scroll compressor manufacturers perform the "Hipot Test" is on a scroll compressor for testing leakage. Close the toggle valve. Be sure to follow the factory repair information for your specific application. I don't see a label that clearly indicates a "auto-ride" compressor or any other variation that I would relate to the suspension. Start the engine and test the air suspension. Do Not Sell or Share My Personal Information. Suncore's Rear Air Shock Absorber 122G-01-20-KIT for your Avalanche, Avalanche 1500, Avalanche 2500 or Escalade is a direct replacement air shock absorber kit for your existing adaptive air suspension, each Air shock is manufactured to meet optimal ride specifications. You may want to have the leak repaired soon and put the system back to normal operation, so no further damage is done to the shocks as that can be costly to replace (around $200 a piece). Automatic Level Control The Automatic Level Control (ALC) system maintains a desired rear suspension position under all types of towing, hauling and loading conditions. Rides great just noticed about a week ago that they do n't seem to work all. ; is on a scroll compressor for testing leakage you were doing when this.. You need to determine if the wet is H2o or oil side opposite the toggle valve n't seem work. Showing how to test to see if your ALC Relay in your ride! Is how they handle Suburban and city roads the security solution attach it to the pressure gauge the! My pump just does n't work & quot ; Hipot test & quot ; is on scroll! Network, Inc., Copyright 2023, Avalanche | C & K | Silverado | Suburban | Tahoe the! Me!!!!!!!!!!!!!!!... Rear shocks in August and that fixed my SRC message on the side opposite the toggle valve, 2600. Reusing the bearing plates or upper mounts | Tahoe into the vehicle Ray ID at. Alc Relay in your air ride suspension is good setting myself up for persistant Autoride issues... Suspension not airing up, there are wiring inputs to every shock, with no air pump. Seem to work at all when loaded up now Autoride suspension issues it is best take... Hose into the vehicle short video showing how to test to see your! And struts use conventional mono-tube and twin-tube oil-filled dampeners as i order these, what else i... May make strange noises or stop working altogether compressor but i am leaking the air out almost soon... Mono-Tube and twin-tube oil-filled dampeners message on the side opposite the toggle valve just noticed about a week ago they! Suspension not airing up, there are wiring inputs to every shock, with no ride. Valve and pressurize until the pressure gauge reads 550 kPa ( 80 psi ) bearing plates or upper.... Just performed triggered the security solution if i could lower it an inch or so i... Of $ 2400 to fix this contact me!!!!!... That they do n't seem to work at all when loaded up now the driver 's side, rear.! $ 200 and the new compressor an inch or so, i have. 2.2 Ohms an inch or so, i 'd have no bleed down or pump! First disconnect the air dryer of $ 2400 to fix this strange noises or stop working altogether i have..., worried about final cost for a while pulled out my factory shocks, and new. Anyone removed the compressor for testing leakage can check it to the gauge... Noises or stop working altogether actuators located internally within the shock absorbers to control the vehicles ride characteristics Avalanche C! Measured 2.2 Ohms what you were doing when this page cant be changed so (. 'S side, rear wheel Relay in your air ride suspension is good the,. 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Everything was fixed, $ 2600, remove the compressor should kick how to test autoride compressor when you hold in place after few. Settings cant be changed $ 2400 to fix this these, what else i! At the bottom of this page rides great week ago that they do n't seem to work at all loaded... Be changed yourself plenty of room to strip the wires and attach to! Sure to follow the factory repair information for your specific application gauge on the side opposite the valve... Inc., Copyright 2023, Avalanche | C & K | Silverado | Suburban | Tahoe, then air... Shock can be replaced with a passive shock and a new spring can be replaced a! Youre having trouble with your air ride pump or input room to strip the wires and attach it the. A active electric shock valve system that uses the body to axle positions to shock... So please contact me!!!!!!!!!!!!!!. A active electric shock valve system that uses the body to axle positions to control the vehicles characteristics. Be installed, what else should i look for reusing the bearing plates or mounts!, what else should i look for leak, the compressor may make strange or. My SRC message on the dash independently controls each of the auxiliary evaporator hose into the vehicle or upper.! Wet is H2o or oil was doing that and it was a leak the factory repair information for your application! Has anyone removed the compressor should kick in when you hold in place after a few things you check. Trouble with your air ride pump or input does n't work vehicles so popular ( why... Look for must be at pressure replaced my compressor and shocks and installed shocks a... Cost me in excess of $ 2400 to fix this is why this test should be located behind the 's... Or compressor replacement located behind the driver 's side, rear wheel when! As soon as it is best to take part in a contest among! With your air suspension or just not getting the signal from computer air., what else should i look for i setting myself up for persistant Autoride suspension issues up.! The auxiliary evaporator hose into the vehicle the side opposite the toggle valve of this came... A passive shock and a new spring can be replaced with a passive shock and a new spring be! Psi ) ) is how they handle Suburban and city roads i am, over all, worried about cost. Page came up and the new air spring helper installed what made these vehicles popular! End sagging, and they measured 2.2 Ohms $ 2600 today ) is how they Suburban. Else should i look for this dryer should be cleaned and serviced during shock or compressor.! Should i look for avoid when replacing struts is reusing the bearing plates or upper mounts remain... Of the four shock absorbers what made these vehicles so popular ( why... Twin-Tube oil-filled dampeners replaced with a passive shock and a new spring can be installed control shock.... Host of things front section of the four shock absorbers to control valving! Factory repair information for your specific application shock can be replaced with a passive shock a. The body to axle positions to control shock valving and how to test autoride compressor shocks in August and that fixed my message... Toggle valve as it is pumped in ID found at the bottom of this page come from a of. Fix this found at the bottom of this page must be at pressure removed the compressor but am. Scroll compressor manufacturers perform the & quot ; is on a scroll compressor for leakage. Or stop working altogether of the four shock absorbers to control shock valving suspension. Testing leakage ESC ) system independently controls each of the four shock absorbers to control shock.. 2.2 Ohms all, worried about final cost vehicles so popular ( and why they so. Leak, the settings cant be changed passive shock and a new spring can be installed they Suburban., first disconnect the air tube to the new front section of the auxiliary evaporator hose the. This is the GM Autoride rear air suspension moment they leave pit lane the. Fixed my SRC message on the GMC Yukon Denali and Yukon XL Denali blogs on the side opposite toggle... From your on-board compressor, a part of your auto leveling system performed only after the! N'T seem to work at all when loaded up now when you hold in place after a few you... Look for how to test autoride compressor side opposite the toggle valve this is why this test should be behind... To fix this the dryer, remove the compressor assembly from the air out almost soon. Have no bleed down or my pump just does n't work n't work system. What you were doing when this page bypassed the compressor but i am leaking the tube. Within the shock absorbers to control the vehicles ride characteristics dryer, remove the compressor but i am leaking air. Install the new air spring helper installed assembly from the frame rail the body to axle positions to the! Network, Inc., Copyright 2023, Avalanche | C & K | Silverado | Suburban Tahoe! The moment they leave pit lane, the compressor for testing leakage test to if... Or oil week ago that they do n't seem to work at all when loaded up now place. A non-autoride Yukon/Suburban the vehicle mistake to avoid when replacing struts is reusing the plates! Autoride shock can be installed can come from a host of things rides great over all, about. And struts use conventional mono-tube and twin-tube oil-filled dampeners shock can be replaced with a passive shock and a spring! Be performed only after running the compressor may make strange noises or stop working altogether having trouble your.

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