GM Service Manual Online
For 1990-2009 cars only

The Data Display function contains lists of ABS and TCS data parameters. A brief description of all ABS and TCS data parameters available on the scan tool are listed below. The list is arranged in alphabetical order.

Battery Voltage: The scan tool displays 0-30 volts. The voltage measured between the module's battery positive voltage circuit and ground circuit.

Brake Light Switch: The scan tool displays Applied or Released. The scan tool displays the state of the brake switch.

Left Front Wheel Speed: The scan tool displays 0-255 km/h (0-158 mph). The scan tool displays the actual speed of the left front wheel.

Left Rear Wheel Speed: The scan tool displays 0-255 km/h (0-158 mph). The scan tool displays the actual speed of the left rear wheel.

LF Dump Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LF dump valve.

LF Dump Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the LF dump valve.

LF Hold Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LF hold valve.

LF Hold Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the LF hold valve.

LR Dump Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LF dump valve.

LR Dump Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the LF dump valve.

LR Hold Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LF hold valve.

LR Hold Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the LF hold valve.

Pump Motor Relay: The scan tool displays On or Off. The scan tool displays the commanded state of the pump motor relay.

Right Front Wheel Speed: The scan tool displays 0-255 km/h (0-158 mph). The scan tool displays the actual speed of the right front wheel.

Right Rear Wheel Speed: The scan tool displays 0-255 km/h (0-158 mph). The scan tool displays the actual speed of the right rear wheel.

RF Dump Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF dump valve.

RF Dump Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the RF dump valve.

RF Hold Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF hold valve.

RF Hold Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the RF hold valve.

RR Dump Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF dump valve.

RR Dump Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the RF dump valve.

RR Hold Valve Command: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF hold valve.

RR Hold Valve Feedback: The scan tool displays Active or Inactive. The scan tool displays the actual state of the RF hold valve.

TCS Switching Valve 1 Status: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the TCS switching valve 1.

TCS Switching Valve 2 Status: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the TCS switching valve 2.

TCS Shutoff Valve 1 Status: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the TCS shutoff valve 1.

TCS Shutoff Valve 2 Status: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the TCS shutoff valve 2.

Valve Relay State: The scan tool displays On or Off. The scan tool displays the commanded state of the valve relay.