Having a qualified repair shop check it out would be your best bet . These light;s being on means DTC'S - dignostic trouble codes are stored .
SERVICE STABILITY SYSTEM
Refer to ABS Description and Operation in Antilock Brake Systems
Vehicles with RPO JL4 are equipped with an EBC 430EV ABS/DRP/TCS/VSES module.
This module provides the following vehicle performance enhancement systems.
• Antilock Brake System (ABS)
• Dynamic Rear Proportioning (DRP)
• Traction Control System (TCS)
• Vehicle Stability Enhancement System (VSES)
The following components are involved in the operation of the above systems.
• Electronic brake control module (EBCM) - The EBCM controls the system functions and detects failures.
The EBCM contains the following components.
- System relay - The system relay is internal to the EBCM. The system relay is energized when the ignition is ON. The system relay supplies battery positive voltage to the valve solenoids and to the ABS pump motor. This voltage is referred to as system voltage.
- Solenoids - The solenoids are commanded ON and OFF by the EBCM to operate the appropriate valves in the brake pressure modulator valve (BPMV).
- Longitudinal Accelerometer - The EBCM uses the longitudinal accelerometer to determine the actual straight-line acceleration of the vehicle.
• Brake pressure modulator valve (BPMV) - The BPMV uses a 4-circuit configuration to control hydraulic pressure to each wheel independently.
The BPMV contains the following components.
- ABS pump motor and pump
- Four isolation valves
- Four dump valves
- Two TC isolation valves
- Two TC supply valves
- A master cylinder pressure sensor
- A front low-pressure accumulator
- A rear low-pressure accumulator
• Wheel speed sensors (WSS) - As the wheels spin, toothed rings interrupt magnetic fields in the wheel speed sensors. This causes each wheel speed sensor to generate an AC signal. The EBCM uses these AC signals to calculate the wheel speed. Any imperfections in the toothed ring, such as a missing or damaged tooth, can cause an inaccurate WSS signal.
• Traction control switch - VSES and the engine torque reduction function of TCS are manually disabled or enabled by pressing the traction control switch.
• Lateral accelerometer - The EBCM uses the lateral accelerometer to determine the sideways acceleration of the vehicle. The lateral accelerometer is packaged with the yaw rate sensor as a single component.
• Master cylinder pressure sensor - The master cylinder pressure sensor is located within the BPMV. The master cylinder pressure sensor uses a 5-volt reference and generates an output signal proportionate to the hydraulic fluid pressure which is present in the front brake circuit at the master cylinder.
• Yaw rate sensor - The EBCM uses the yaw rate sensor to determine the rate of rotation along the vehicle's vertical axis. The yaw rate sensor is packaged with the lateral accelerometer as a single component.
• Steering wheel position sensor - The electronic brake control module (EBCM) receives several inputs from the steering wheel position sensor. 3 digital square wave signal inputs are wired directly to the EBCM harness connector, however, only signals A and B are used or monitored. The failure of the index pulse signal does not effect VSES function. The body control module (BCM), which receives an analog steering position sensor input, transmits steering position data on the serial data line. The EBCM monitors the serial data information as an added failsafe for the steering position sensor circuitry. Battery voltage is supplied to the digital portion of the steering wheel position sensor from the cruise control fuse. The analog portion of the steering wheel position sensor is supplied a 5-volt reference from the BCM. This circuit is also used for a lamp dimming function.
• Precharge pump motor and pump - The precharge pump assembly is used to assist the ABS pump in rapidly building hydraulic pressure needed during certain TCS or VSES events
Do you know what DTC'S are ? The ABS , traction control can set a bunch .
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0220
DTC C0221-C0227 or C021 (W/O JL4)
DTC C0221-C0227 or C021 (W/JL4)
DTC C0228
DTC C0229 or C029 (W/O JL4)
DTC C0229 or C029 (W/JL4)
DTC C0235-C0237 or P0609
DTC C0238 or C038
DTC C0240
DTC C0241-C0243
DTC C0244 (W/O JL4)
DTC C0244 (W/JL4)
DTC C0245 (W/JL4)
DTC C0245 (W/O JL4)
DTC C0246-C0254
DTC C0265 or C0266 and C065 or C066
DTC C0267 or C0268 and C067 or C068
DTC C0269 or C0274 and C069 or C074
DTC C0271-C0273, C0284
DTC C0279 (W/O JL4)
DTC C0279 (W/JL4)
DTC C0281 or C081
DTC C0283 (W/O JL4)
DTC C0283 (W/JL4)
DTC C0287, P1644, or P1689
DTC C0290 or C0292 (W/O JL4)
DTC C0290 or C0292 (W/JL4)
DTC C0291
DTC C0297
DTC C0298 or P1571
DTC C0455
DTC C0472 or C0473
DTC C0550
DTC C0558
SOURCE: How do you reset service stability control & ABS
please send $100 to me and ill send you solution.. I was interested in your service until i heard some of your answers like requires expert must take to pro??? gee thanks for $15 advice
SOURCE: abs light/traction control light
You can check out what the trouble code is by pushing and holding the information button and the up arrow (right side of instrument cluster above the radio) until all the instrument clusters light. Press the information button (last) to enter test mode. I've had an error C1234, meaning Left rear wheel sensor fault. I found the problem to be a corroded connector under the chasis just under the rear left door about 2 feet in. I had to by-pass (replace 1 wire due to corrosion at the connector.
SOURCE: service stability system light flashes
i hav the same problem wit my 98 deville wat did u do to fix it and wat was the cheapest way. Also did u have anyother problems wit ur car during the time u were driving it wit these lights on
SOURCE: Hi,I have a 2002 Escalade
Service Stability System light comes on when your tires are not gripping the road correctly, this assumes that the truck is sliding and the driver had no control. From what I noticed with mine is that it will disable power to the transmission untill traction is regained around 10 to 20 seconds. I had to shift to netural then back to drive to re-engage the trans. This is a saftey feature that I was impressed with. I paid about 300 to have the dearler replace the part, but I'm quite sure you can get it fixed for less.
SOURCE: service stability system light came
ABS and traction control issues are common on these years of GM (late 90's, early 00's) and can usually be traced to something getting 'caught' on the sensors (look like sprockets)-take the car to a high-pressure carwash and have the undercarriage cleaned, or do it yourself at he places that have hand-held wands. Even a heavy concentration of dust on those sprokets can cause this.
Whenever this warning or any other stays on in the dash it is indicating that the systems control module has detected a fault, it then disables the system as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)
5,003 views
Usually answered in minutes!
×