Went to get in my bravada and the rear of the vehicle is setting really low. the compressor will not turn on , so i checked all fuses all good under hood and rear seat. no power to compressor or leveling sensor on driver side rear. any suggestions?
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I'll assume you still have the air compressor which activates to automatically level your vehicle. When the air bags get old, they leak and need to be replaced. If you do not do it early, you will overwork the compressor and it will fail. Mine went out shortly after the air bags started leaking as it was coming on way too often. I got new air bags and a rebuilt compressor but the compressor failed within a few months. A new one was too expensive. I went to a website called Trailvoy.com and read about many that have had the same problems. One post explained how to cure this. So I chose not to mess with the compressor anymore and followed their instructions and made a bypass so I can fill the air bags myself from the air valve in the rear of the vehicle. I keep a portable compressor in the back just in case and it plugs into the 12v power port in the back. Pressure is best at 55 lbs. The air bags are rubber and eventually, due to weather conditions, they start to crack. If one is leaking, the second is soon to follow. When they can no longer hold air, the rear of the vehicle will sag way down and bounce when you drive it. It's not only annoying, it is unsafe.
Trailvoy is a forum for Trailblazer, Envoy & Bravada owners. Our model (2002 Bravada) is on the same platform as these others while Envoy offered a V8 engine also. (we have the 6 cylinder).
It costs nothing to join the site and you can get all sorts of helpful info regarding your vehicle. Many master mechanics belong to it so you'll get great advise if you ask questions.
you should buy a hynes repair book at autozone trust me they tell you how to fix various problems and also have electrical diagrams of your vehicle. unless i looked at your vehicle I really can't help you
The first thing to do is establish the condition of the compressor. Using jumper wires, connect the compressor to direct battery voltage. Make sure you don't have a blown fuse. If the compressor works with direct voltage, then the problem lies elsewhere. Make sure all the air lines are connected and in good shape. Check to see if the level sensor under the rear of the vehicle is getting vovltage. If your compressor doesn't come on when you apply direct voltage, then it will have to be replaced. Shop around for the best deal on a new compressor. The dealership will charge you a tremendous markup.
I bought an '02 Bravada a couple months ago. I was told that this is normal. Since it's an air ride suspension the air escapes when the vehicle is not in use like overnight. Then after starting up the air compressor will turn on and inflate the air ride suspension.
To begin with, check the "ride level" fuse and make sure that the ride level compressor does work, and you should be able to hear that the ride level compressor is working when the ride level system is leveling the vehicle.
The ride level system uses an air compressor and either an air type of shocks or a type of air billow to raise and lower the vehicle, there is an adjustment to set the ride height and it is located under the vehicle and there is a control lever or rod that should be connected between the rear axle and a switch that is mounted on the body of the vehicle, and there will be an adjustment slot in the control lever between the switch and the body, and that is how you would adjust the ride level height, but be sure that the vehicle can not drop any further down if someone is under the vehicle trying to adjust the ride height.
However, you might find that the control lever to the ride level has fallen off from the switch on the body or it has come loose from the rear axle, and it is just hanging there not operating the switch on the body that controls the the ride level compressor, or there might be a blown out air shock or billow, or you might find that an air line from the compressor is leaking and the ride level compressor will just run continuously until it blows out the fuse, and if that is the case you might also find out that the air compressor has burned out from running continuously.
I hope that this information will help you to solve your ride level problem.
I shared the exact issue this past summer with my 02 Bravada. For about 26 dollars you can put a valve stem on both airlines and bypass the expensive dead compressor. This fixed the problem for about a month until one airbag began to leak faster than the other and the truck always seemed to sit unlevel. Today I purchased 2 used coil springs from a junkyard for 65 dollars and replaced the airbags in less than an hour without any special tools. The truck sits up well and level and I'm glad to be rid of all problems that go along with having air suspension. GM used the same coil springs on the Envoy, Trail Blazer and Buick Reiner.
There are over 2000 different trouble codes that can store with your check engine light. Probably 30-50 of them (or sequences of them) can trigger limp-mode or safe-drive mode on most vehicles. In your case, I would strongly suspect a problem with the electronic throttle control assembly. For safety, vehicles with electronic throttle frequently limit speed and rpm to very low numbers when a fault is detected to prevent runaway accelerations and high speed collisions. Have it checked by a professional. It may be as simple as a sensor on your accelerator pedal, or the throttle assembly itself could be starting to fail. In either case, it shouldnt be played with unless you have the proper diagnostic equipment (a Tech-2 Scantool) and good repair data.
NOTE: Clearing the code with a generic tool or disconnecting the battery MAY allow the car to reset, and if the problem is intermittant, it may become normally drivable till the next time thr problem occurs. HOWEVER...the technician who fixes the car really should have access to the original failure information stored in the freezeframe snapshot the computer took when it set the code. If you reset the light or disconnect the battery, that info will be erased and make make diagnosis and repair much much more difficult.
What has probably happened is you got a hole or cracks in your airbag. Dealerships and mechanics typically diagnoses it as the compressor but that is only to keep you coming back and wasting more money on something that will never truly be fixed. Both the airbag and the compressor are the problem. The compressor has to work extra hard because it is like blowing up a balloon with a hole in it. Therefor the airbag will kill the compressor. I would recommend going to strutmasters.com and taking a look at the conversion kits. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. This is a PERMANENT fix. I added the link below so you can check it out.
I hope I was of some help