Question about 1999 Chevrolet Venture

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Electronic level control

Air shock,s stay extended all the time

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  • poolshrk23t Jan 15, 2009

    2005 venture with Electronis Level Control problem. Rear is up high and the ride is rough. Cannot seem to release air, but I dont have an owners manual. What would be the normal way to lower it. It has a pump switch and an air inlet valve. No air releases when you depress the valve stem.

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If you look under the rear of the van, there is a steel support that runs from the left to the right. Just behind that if not attached to it is a funky little devise that has a flexible arm. Move that arm and it will release the air. Be careful you are not directly under the van when doing this.

Posted on Apr 27, 2009

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I had this problem once, I pulled the fuse on the air compressor, then released the air from the shock, by removing the air line from the shock. Then I replace the fuse. So far It seems to work again.
Must have somehow gotten out of range for the auto-level controller, letting the air out manually reset it. Worked for me!

Posted on Aug 31, 2008

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Lower rear end of 2002 Park Avenue


Does your Buick have electronic level control (ELC), which utilizes air adjustable shocks. ELC maintains the rear trim height under a wide range of loads. Refer to ELC, as applicable ? Have you changed shocks on the back ?

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Where exactly is the switch for the air suspension compressor on a 2006 Buick Lucerne CXL?


The automatic level control (ALC) system maintains a desired rear suspension position under all types of towing, hauling, and loading conditions.
The system uses the electronic suspension control module (ESCM), ALC relay, ALC compressor assembly, air dryer, air lines, LR and RR shock absorbers with integral air chambers, LR and RR suspension position sensors, exhaust valve, driver information center (DIC), and the serial data circuit to perform the system functions.
What switch ? there are sensors at the wheels that control the system .
The system uses the automatic level control module (ALCM) with integral suspension position sensor, ALC relay, ALC compressor assembly, air dryer, air lines, LR and RR shock absorbers with integral air chambers, exhaust valve, driver information center (DIC), and the serial data circuit to perform the system functions.

The

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My check your air suspension warning light came on. I checked the book that came with the car and it said, it could be in the electic part of it. So my question to u is what can the electric part be?


It's mostly electronic , There is a control module ,sensor's at the corners ,wheels , an electric compressor to pump air to raise the vehicle .
You don't say what make , model an year vehicle but there all pretty much the same . This is for a Cadillac Deville
The electronic suspension control (ESC) system consists of the following components:
?€¢
Electronic suspension control (ESC) module (3)


?€¢
Four dampers contained in the 2 front struts (5 and 6) and the 2 rear shock absorbers (1 and 9)


?€¢
Four positions sensors (2, 4, 7, and 8)


?€¢
ALC air compressor module (10)


?€¢
Damper relay (not shown)


?€¢
ELC relay (not shown)

The ESC system with rear automatic level control (ALC) controls damping forces in the front struts and rear shock absorbers in response to various road and driving conditions. The rear ALC portion of the system maintains a proper vehicle trim height under various vehicle load conditions. For more information on the ALC, refer to Automatic Level Control Description and Operation in Automatic Level Control.
The ESC module receives the following inputs: wheel-to-body position, vehicle speed, and lift/dive. The ESC module evaluates these inputs and controls actuators in each of the dampers independently to provide varied levels of suspension control.
Your best bet is take it to the dealer !

Jan 12, 2016 | Cars & Trucks

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1989 deville load level compressor runs for 3 seconds then stops after turning ignition switch on


Check and make sure that the level control lever that goes to your shocks was reconnected. Might have been overlooked....Hope this helps.

Mar 30, 2014 | 1989 Cadillac Sedan DeVille

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What is dynaride?


Dynaride means that your rear shocks have electronic level control. There is a sensor mounted to the rear suspension. If you add some luggage or persons to the car the rear lowers. The sensor senses this down movement and starts the air compressor which is mounted in under the hood (left fender area). This compressor pumps air into the rear shocks compensating the additional load, so the car remains at proper level all the time. If you start the engine with a delay of about 20 secs the compressor should run for a view seconds to build up the minimal pressure the system needs. If the engine is stopped also with some delay of 30 sec. the release valve opens to vent out all the air.

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I replaced the air shocks on my Olds Silhouette with no problem and thought the problem I had (van sitting very high in back) was solved. Rode great first week or so afterwards. Now it is back to shocks...


Check the bleed port on the controller, it may be plugged with dirt. or the controller may have failed. A full funtion scanner would help find the problem.
An other option is to by-pass the auto- leveling system and install a manual scrader valve in the air line, this would allow you to add and remove air with any source. They are availble at most autopart stores.

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1 Answer

Replace front shocks-- What kind of shock is best? Can I replace them without putting the car on a hoist?


YOU HAVE TO TURN OFF AIR SUSPENSION SYSTEM IF YOU HAVE AUTOMATIC LEVELING AIR SPRINGS. ALL YOU HAVE TO DO IS SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS REMOVE THE OLD SHOCKS. PRIME NEW SHOCKS PUMP THEM UP COMPRESS PUT ON VECHICLE.DONT FORGOT TO TURN OFF AIR SUSPENSION SYSTEM FIRST IF YOU DONT THE AIR COIL SPRINGS WILL OVER EXTEND PUMP MORE AIR IN SPRINGS CAUSE DAMAGE TO AIR SPRINGS.

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1 Answer

My 1998 cady sts is really high in the back looks like it is lifted.... why?


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A Service Ride Control message came on my 2005 Chevy Tahoe with 28,000 miles- Dealer diagonosed it as the EBCM and charged me $750 - on the way home the message came back on - why?


Electronic Brake Control Module,
I really don't understand why they would change this module if your message stated,Ride control,
The ride control on the tahoes is an airbag (air powered shocks) leveling system. If I remember right, they are only in the rear. They are meant to raise or lower the rear end to be level with the front end. To do this, it has air shocks in the back, which are controlled by a computer and a compressor probably under the hood. Now, the light could mean many things, the most common being that an airbag broke, and air is leaking out. You may be able to hear a whine of the compressor trying to keep it filled. Less common, but possible are that the compressor is dead, or a line ruptured. The most common reason that the air shocks go out, are when the vehicle is lifted (tire change or such) without the leveling system being deactivated. Hope this helps. Good luck.


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