Question about 2002 GMC Envoy

1 Answer

Suspension how do i fix my electronic controlled suspension

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Contributor
  • 27 Answers

Definately take it to a shop as you never know what could be wrong with those air ride suspension systems.. could have a leak in the air bag and consequently an overworked compressor... who knows. I converted my old air ride system to a passive coil spring suspension. I got it from Strutmasters.com - (a friend of mine had used them a couple of months prior and recommended them to me) http://www.strutmasters.com/gmc-envoy-suspension-s/95.htm The conversion kits come with a lifetime warranty (I think all of them) Anyways.. hope this helps. Good Luck!!

Posted on Apr 27, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

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

1 Answer

Rear suspension will deflate but why won't it inflate?


That could work , You mite be able to test the sensor in question with ohm meter . Test the front one an see what the resistance is ,then check the back one. I don't know what it should be with out looking it up in the service info . You could also check to see if the sensor is getting power from the control module , an see if there is a return input to the module .
There are a few DTC'S this able to set !
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index DTCs Description Source Action B1318 Battery Voltage Low Air Suspension Control Module Go To Pinpoint Test C . B1342 Air Suspension Control Module Air Suspension Control Module INSTALL a new air suspension control module. REFER to Module-Air Suspension Control . SET the front ride height. REFER to Air Suspension Initialization (Clear DTC B2140). CLEAR the DTCs. REPEAT the self-test. B1485 Brake Pedal Input Circuit Battery Short Air Suspension Control Module RERUN On-Demand Self-Test. MAKE SURE that the brake pedal is not pressed. If DTC is returned again, REPAIR brake pedal position (BPP) circuitry. B1566 Door Ajar Circuit Short to Ground Air Suspension Control Module Go To Pinpoint Test D . B2140 Initialization Failure (Vehicle Ride Height Not Programmed) Air Suspension Control Module REFER to Air Suspension Initialization (Clear DTC B2140). C1439 Vehicle Acceleration EEC-V Circuit Failure Air Suspension Control Module Go To Pinpoint Test E . C1724 Air Suspension Height Sensor Power Circuit Failure Air Suspension Control Module Go To Pinpoint Test F . C1726 Air Suspension Pneumatic Failure Air Suspension Control Module Go To Pinpoint Test G . C1760 Air Suspension Height Sensor High Signal Circuit Failure Air Suspension Control Module Go To Pinpoint Test H . C1770 Air Suspension Vent Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test I . C1790 Air Suspension LR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test J . C1795 Air Suspension RR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module Go To Pinpoint Test K . C1830 Air Suspension Compressor Relay Circuit Failure Air Suspension Control Module Go To Pinpoint Test L . C1917 Steering Electronic Variable Orifice (EEVO) Out-of-Range Fault Air Suspension Control Module Go To Pinpoint Test Q .
  • Uneven vehicle height
  • Circuitry.
  • Rear pneumatic fault.
  • Air compressor assembly.
  • Air suspension control module.
  • Go To Pinpoint Test I .

Nov 06, 2015 | 2002 Lincoln Navigator

1 Answer

2002 Bravada. How to get the rear suspension check valve unstuck?


  1. Tech Tip: Servicing Bravada Electronic Controlled Air ...

    www.autocarepro.com/tech-tip-servicing-bravada-electronic-controlled-a...
    Aug 14, 2007 - I borrowed a friend's 2002 Oldsmobile Bravada to pick up some supplies ... The Electronic Controlled Air Suspension (ECAS) compressor was running,... I found the compressor check valve sticking in the compressor housing ...

Jul 10, 2015 | Oldsmobile Cars & Trucks

1 Answer

Service ride control 05


No. This is basically telling you that the electronic portion of the suspension system has a fault. All the basic mechanical items will still work as normal. It is common on those truck to have the Auto Ride pump go bad for the air suspension in the rear.

Dec 30, 2013 | 2005 GMC Yukon Xl Denali

1 Answer

What's the cheapest way to fix rear Air shocks


Well you have electronic controlled suspension which uses air shocks among other components.
The shocks are unique to Cadillac and your model fits various cars from 1998 until 2005.
You can buy replacement parts new, or used. I'm not aware of anyone who makes the shocks in standard form due to the electronic control feature.

Jan 28, 2013 | Cadillac Seville Cars & Trucks

1 Answer

2003 Yukon Denali has Service ride Control Warning..wat to do?


Hi Jose:
The first place to start is to have Ride Control Module scanned for trouble codes, this requires a high end scan tool. Most common problem is the air compressor in the rear or a height sensor. Here is how the system works.

Automatic Level Control Description and Operation
The RTD system is bi-state real time damping system. The Suspension Control module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system and electronic variable orifice (EVO) power steering system.

The Automatic Level Control system consists of the following:
• Suspension Control Module
• Compressor/Leveling Module
- Air Pressure Sensor
- Exhaust Solenoid
• Compressor Motor Relay

The objective of the Automatic Level Control System is to provide constant ride height at all load conditions. The Suspension Control module monitors body-to-wheel height, and vehicle speed.

The Suspension Control module will use the rear body-to-wheel displacements and vehicle speed inputs to keep the rear trim height of the vehicle at its desired level.

The electronic suspension control (ESC) system is bi-state real time damping system. The ESC module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system, if 1500 series.

The ESC system consists of the following:
• The ESC module
• The compressor/leveling module, if 1500 series
- The air pressure sensor, if 1500 series
- The exhaust solenoid, if 1500 series
• The compressor motor relay, if 1500 series
• The steering handwheel speed/position sensor
• The suspension damper solenoids
• The suspension position sensors

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Nov 16, 2011 | 2003 GMC Yukon Denali

1 Answer

2002 Bravada: electronically controlled air suspension...


just buy some springs from a trailblazer they will fit throw out that compressor the bags are way to spendy id rather go buy some springs for 40 dollars than 1 air bag for 200

May 17, 2010 | 2002 Oldsmobile Bravada

1 Answer

Where can i get a copy of the parts that make up the air suspesion of my 2001 grand marquis. sometime it works and other time it will not.


Vehicle Dynamic Suspension The vehicle dynamic suspension consists of the following components:
  • Rear air suspension control (RAS) module (5A919)
  • Snorkel
  • Drier
  • Air compressor (5319)
  • Air suspension switch (5K761)
  • Solenoid valve (5311)
  • Air spring (5560)
  • Air suspension height sensor (5359)
  • Air line
------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Restricted suspension movement
  • Excessive vehicle load
  • Cut, severed, or crimped air line(s)
  • Damaged air spring(s)
  • Height sensor damage
  • Height sensor mounted incorrectly, disconnected, or damaged
  • Central junction box (CJB):
    • Fuse 5 (15A)
  • Battery junction box (BJB):
    • Fuse 8 (30A)
  • Loose or corroded connectors
  • Air suspension switch OFF


The air suspension control module is diagnosed using Super Star II Tester 418-F045 (007-0041B) or equivalent.
The test connector used to communicate with the air suspension control module is located on the RH side of the luggage compartment.
When the tester is connected, the engine is started and the HOLD/TEST button is latched down, the air suspension control module will respond sending a code 10 to the Super Star II Tester which represents "Diagnostics mode entered." If diagnostic trouble code (DTC) 10 is not displayed, go to Pinpoint Test A.
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
Condition Possible Sources Action
  • No communication with the air suspension control module
  • CJB Fuse 5 (15A).
  • BJB Fuse 8 (30A).
  • Circuitry.
  • Air suspension control module.
  • GO to Pinpoint Test A .
  • Unable to enter auto test
  • Air suspension control module.
  • Circuitry.
  • GO to Pinpoint Test B .
  • Rear air suspension does not respond to load changes
  • Circuitry.
  • Air compressor.
  • Air compressor inlet tube.
  • Air compressor drier.
  • Air suspension height sensor.
  • Air suspension control module.
  • GO to Pinpoint Test C .
  • Rear rides low/high
  • Circuitry.
  • Air spring solenoid.
  • Air suspension height sensor.
  • Air suspension control module.
  • GO to Pinpoint Test C .
  • Poor ride quality
  • Circuitry.
  • Air springs.
  • GO to Pinpoint Test C .
  • Air suspension warning indicator ON
  • Air suspension switch OFF.
  • Place the air suspension switch in the ON position.
  • Air suspension control module.
  • Circuitry.
  • GO to Auto Test.
  • Instrument cluster (conventional cluster) or lamp warning module (electronic cluster).
  • REFER to Section 413-01A (conventional cluster) or REFER to Section 413-01B (electronic cluster), or REFER to Section 413-01C (natural gas cluster).


Sep 25, 2009 | 2001 Mercury Grand Marquis

2 Answers

Warning Light on the dash is illuminated all the time and it says, "BAS ESP"


This is the Brake Assistance/Electronic Stablilty malfunction light, it is the equivalent of an ABS (antilock brake) / electronic suspension control (traction control, rollover control, electronic suspension control) light. It basically means you have a problem in either your electronic ABS, traction control, or some other advanced electronic suspension control problem... Your car is fine to drive like it is, unless you detect some other driveability issue other than the dash light... (99.9% of the time it's something irrelevant and maybe stupid; that's what you get for driving electronic cars...) Your best bet to get rid of the light would be to get the car to an auto shop with a reader that can read ABS/EBS, brake and suspension codes to really find out why the light is on (usually a wheel speed sensor, or something like it...)

May 07, 2009 | 2005 Dodge Magnum

1 Answer

I have a 1998 ford expedition eddie bauer with front air bag suspension and after driving for about 45 minutes the air suspension light comes on. what's the problem and how do I fix it


here's some info. Do you have a warning light on or does it say "Check Susp"?

Control Module
NOTE: The 4-wheel air suspension (4WAS) control module is also used for the rear air suspension (RAS) system. The internal processor recognizes external circuitry to determine if it is installed in a 4WAS or a RAS system.
NOTE: The air suspension control module is calibrated with information from the air suspension height sensors. A new or swapped air suspension control module requires the ride height adjustment calibration process to be performed.
A microcontroller-based electronic air suspension control module controls the air compressor motor (through a solid state relay), and all system solenoids. The air suspension control module also provides power to front and rear height sensors. The air suspension control module controls vehicle height adjustments by monitoring the two height sensors, vehicle speed, a steering sensor, acceleration input, the door ajar signal, transfer case signals, and the brake pedal position (BPP) switch. The air suspension control module also conducts all fail-safe and diagnostic strategies and contains self-test and communication software for testing of the vehicle and related components.
The air suspension control module is mounted in the passenger compartment inside the instrument panel, above the radio and temperature controls. The air suspension control module is interchangeable between the RAS and 4WAS system.
The air suspension control module monitors and controls the system through a 32-pin two-way connector. The air suspension control module is keyed so that it cannot be plugged into an incorrect harness. There are two sides of the harness connection to the air suspension control module. Each is uniquely colored and keyed to prevent reversing the connections.
Solenoid, Air Spring
swj~us~en~file=ani_caut.gif~gen~ref.gif WARNING: Never rotate an air spring solenoid valve to the release slot in the end cap fitting until all pressurized air has escaped from the spring to prevent damage or injury.
The air spring solenoid:
  • Allows air to enter and exit the air spring during leveling operations.
  • Is electrically operated and controlled by the air suspension control module.
  • Is only replaced as a unit.
Air Suspension Diagnostic Connector
The air suspension diagnostic connector is used to aid the technician in diagnosing the air suspension system. It is also used to vent the system of compressed air when air suspension system components need to be repaired or replaced. The air suspension diagnostic connector is located under the steering column.
Steering Sensor
The steering sensor is mounted inside the passenger compartment on the steering column. It provides steering rate and position to the air suspension control module through two signals.
Pressure Relief Valve
The pressure relief valve (PRV) protects the rear air suspension components by venting the system to a specific pressure in the case of a system malfunction. The system will decrease the pressure to an acceptable level to maintain vehicle height. In the normal operation mode with normal system pressure the PRV is constantly closed and does not have any effect on the system performance or function. The PRV is replaceable without any air lines.
The PRV is located in the rear of the vehicle on the middle of crossmember #5 as a part of the rear air line assembly.

Mar 09, 2009 | 1998 Ford Expedition

Not finding what you are looking for?
2002 GMC Envoy Logo

789 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...