GM Service Manual Online
For 1990-2009 cars only
Ignition Voltage: The scan tool displays 0-17 volts. The amount of ignition voltage at the EBCM.

Left Front Wheel Speed: The scan tool displays 0-255 km/h (0-159 mph). The actual speed of the left front wheel.

Left Rear Wheel Speed: The scan tool displays 0-255 km/h (0-159 mph). The actual speed of the left rear wheel.

Right Front Wheel Speed: The scan tool displays 0-255 km/h (0-159 mph). The actual speed of the right front wheel.

Right Rear Wheel Speed: The scan tool displays 0-255 km/h (0-159 mph). The actual speed of the right rear wheel.

Switched System Battery Voltage: The scan tool 0-17 volts. The level of internal EBCM voltage available to the VES actuator when the ABS relay is energized.

VES Commanded Current: The scan tool displays -2.00 to 3.00 amps. The amount of current the EBCM is commanding to the VES actuator.

VES Failed: The scan tool displays Yes or No. Yes indicates a malfunction has been detected within the VES system. No indicates the VES system is operating to specification.

VES Feedback Current: The scan tool displays 2.00 to 3.00 amps. The absolute, or positive value of current returning from the VES actuator to the EBCM. Thus the - symbol is not displayed.

VES Indicator/Message: The scan tool indicates ON or Off. The state of the VES malfunction indicator or message, if equipped.