How does a GM autoride air suspension compressor work?

The compressor is a positive displacement piston air pump. It draws filtered air through an intake line attached to an underbody rail. 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.

What to do if your air suspension compressor goes bad?

Check the IGN 3 fuse or replace you air suspension compressor. This error is to indicate the exhaust solenoid on the air suspension compressor has gone bad, which is not always the exact case, but can be.

What are the codes for the Auto Ride compressor?

The codes P0171 (System too lean bank1), P0102 (mass airflow circuit low), P0113 (intake air temperature circuit high), and P0101 (mass airflow circuit range/performance) could be, all related to a faulty MAF (mass airflow) sensor. The TRAC light… Found one black pipe detached when I opened the hood.

What should the pressure be on a Dorman air suspension compressor?

The left wasn’t exhibiting the behavior because the air line to that shock from the compressor at its light rear mounting location is only 6 inches long opposed to the several feet to the right side. Arnott advised testing my compressor for pressure, noting it should be 135 psi.

How often does the air suspension compressor kick on?

While my original compressor and shocks seemed to function normally, the compressor was pretty loud, and would kick on for 20 seconds every time the truck was started, put in park, or even idling in gear at a light.

When did the Autoride system on my suburban stop working?

Last year during winter my Autoride system on my 2004 Suburban stopped working. The compressor does not come on after I crank the vehicle. I had changed out the battery about the same time frame.

What kind of rear air suspension does GM use?

The key to their functionality is the GM AutoRide rear air suspension. AutoRide comes standard on the GMC Yukon Denali and Yukon XL Denali. The system is also standard on the Cadillac Escalade, Escalade EXT and Escalade ESV, on which it is known as Road Sensing Suspension.

How does eSCM work on autoride air suspensions?

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 compressor’s cylinder head, ensuring low motor current draw upon compressor activation.

What to do if your GM air suspension breaks?

Repair or replace any leaking components. There are three replacement options when it comes to a GM Autoride System. First, the owner can return the system to like-new condition by having the broken components, such as the active shocks and compressor, replaced.

How does the Dorman air suspension compressor work?

Rigorously tested for sustained, secure performance by a team of product and quality engineers, the Dorman Air Suspension Compressor eliminates excessive suspension sag, restoring vehicle handling and safety. It is available as a complete assembly with all new components, including the motor and dryer.

How does Autoride Suspension work on a Chevy Suburban?

There are frame to suspension sensors, which feedback how far down the frame is sitting down on the suspension. Each shock is an air shock, air-tube connected back to a set of air solenoids, fed by an air pump. If the sensor feeds back that a particular corner is low, pump turns on, and that solenoid opens to allow the pump to pump up that shock.

Where is the air suspension compressor on a truck?

The compressor mounts on the frame of the truck right behind the left rear wheel and under the gas filler cap. Job took about 45 minutes. You’ll need a 13 mm socket, an extension, and a flathead screwdriver and needle nose pliers to unclip the power/electronics plug. 1.