Question about 2008 Chevrolet Uplander
• An internal fault within the yaw rate sensor/lateral accelerometer, P/N 15189628, may be the first possible cause. • The vehicle stability enhancement system (VSES) electronic brake traction control module See if this info helps
Posted on Feb 05, 2010
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Posted on Jan 02, 2017
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The ability of the control modules to communicate through the serial data circuit
The identification of any stored diagnostic trouble codes (DTCs) and their status
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
This Is going to be Greek to you probably ! This is where a up scale scan tool is needed , or a factory one ! Your going to need to have vehicle scanned for DTC'S diagnostic trouble codes ! Is the ABS light on as well ?
A sample of DTC'S
DTC C0186 00: Lateral Accelerometer Circuit
DTC C0186 5A: Lateral Accelerometer Circuit Erratic
DTC C0196 00: Yaw Rate Circuit
DTC C0196 5A: Yaw Rate Circuit Erratic
DTC C0252 00: VSES Sensor Uncorrelated
The Vehicle Stability Enhancement System (VSES) is activated by the electronic brake control module (EBCM) and calculates the desired yaw rate and comparing it to the actual yaw rate input. The desired yaw rate is calculated from measured steering wheel position, vehicle speed, and lateral acceleration. The difference between the desired yaw rate and actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. If the yaw rate error becomes to large, the EBCM will attempt to correct the vehicles yaw motion by applying differential braking to the left or right front wheel.
This is a problem you should take to the dealer or a ASE certified repair shop ! Or you can try to reset the system by disconnecting the battery cables an touching the cable ends together for 60 seconds ! But if there is a real fault in the system ( bad sensor ) The light will come back on ! Maybe not right away ! A couple of days or weeks etc....
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