GM Service Manual Online
For 1990-2009 cars only
ABS Active: The scan tool displays Yes or No. The active status of the ABS. Indicates if ABS is currently active.

ABS Failed: The scan tool displays Yes or No. The failed status of the ABS. Indicates if the EBCM disabled ABS due to a malfunction.

ABS Failed Lamp Command: The scan tool displays Off or On. Indicates if the EBCM is commanding the ABS indicator ON.

ABS Reference Speed: The scan tool displays 0 to 255 km/h (0 to 159 mph). The vehicle speed from the average of all four wheel speeds.

ABS Warning Indicator: The scan tool displays Off or On. Indicates if the EBCM is commanding the ABS indicator.

Battery Voltage: The scan tool displays 0-30 Volts. The voltage measured between the modules battery positive voltage circuit and ground circuit.

Brake Fluid Level: The scan tool displays OK or Low. The status of the brake fluid level sensor signal.

Brake Temp Status: The scan tool displays Normal or Over Temp. The status of the brake temperature. Indicates if the brake temperature is above the traction control thermal cutoff point. If brake temperatures are above the thermal cutoff point, Over Temp is displayed and traction control is temporarily suspended until the brake temperature cools below the cutoff. This feature is used to maintain braking effectiveness if the base braking system is required. Overly heated brakes could result in brake fade.

Delivered Torque PWM Duty Cycle: The scan tool displays 0 to 100%. The duty cycle of the delivered torque signal. The duty cycle of the signal is used to transmit how much engine torque the PCM is delivering. Normal values are between 10 and 90 percent duty cycle. The signal is at low values (approximately 10 percent) at idle and at higher values under driving conditions.

DRP Active: The scan tool displays Yes or No. The active status of the DRP. Indicates if DRP is currently active.

DRP Disabled: The scan tool displays Yes or No. The failed status of the DRP. Indicates if the EBCM disabled DRP due to a malfunction.

Dual Analog SWPS Input A: The scan tool displays 0 to 5 volts. The steering wheel position signal A input.

Dual Analog SWPS Input B: The scan tool displays 0 to 5 volts. The steering wheel position signal B input.

Engine Drag Control Active: The scan tool displays Yes or No. The active status of the EDC. Indicates if EDC is currently active.

Engine Drag Control Failed: The scan tool displays Yes or No. The failed status of the EDC. Indicates if the EBCM disabled EDC due to a malfunction.

Extended Travel Brake Switch: The scan tool displays Applied or Released. The state of the extended travel brake switch.

Ignition Voltage: The scan tool displays 0 to 17 volts. The level of ignition voltage at the EBCM.

Lateral Accelerometer Input: The scan tool displays 0 to 5 volts. The lateral accelerometer signal from the lateral accelerometer sensor, roughly 2.5 volts equals 0 g lateral acceleration.

Lateral Accelerometer - Engineering Units: The scan tool displays -1.2 to +1.2 g. The lateral acceleration of the lateral accelerometer signal.

LF Normal Force: The scan tool displays 20%, 40%, 60%, and 80% High. The percent duty cycle of the left front normal force signal sent by the electronic suspension control module.

LF Rotor Temperature: The scan tool displays -40 to +650°C (-40 to +1202°F). The estimated temperature of the left front brake rotor.

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

Longitudinal Accelerometer Sensor: The scan tool displays 0 to 5 volts. The scan tool displays the longitudinal accelerometer signal received from the sensor.

LR Normal Force: The scan tool displays 20%, 40%, 60%, and 80% High. The percent duty cycle of the left front normal force signal sent by the electronic suspension control module.

LR Rotor Temperature: The scan tool displays -40 to +650°C (-40 to +1202°F). The estimated temperature of the left front brake rotor.

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

Pump Motor Feedback Voltage: The scan tool displays 0 to 17 volts. The voltage available to the pump motor when the pump motor control relay is energized.

Pump Motor Commanded State: The scan tool displays Off or On. Indicates the commanded state of the pump motor control.

Pump Motor PWM: The scan tool displays 0 to 100%. The duty cycle of the pump motor.

Red Brake Warning Indicator: The scan tool displays Off or On. Indicates if the red Brake warning indicator is currently ON.

Requested Torque PWM Duty Cycle: The scan tool displays 0 to 100%. The duty cycle of the requested torque signal. The duty cycle of the signal is used to transmit how much torque the EBCM is requesting the PCM to deliver. Normal values are between 10 and 90 percent duty cycle. The signal should be at 90 percent duty cycle when traction control is not active and at lower values (approximately 10 percent) when traction control is active.

RF Normal Force: The scan tool displays 20%, 40%, 60%, and 80% High. The percent duty cycle of the right front normal force signal sent by the electronic suspension control module.

RF Rotor Temperature: The scan tool displays -40 to +650°C (-40 to +1202°F). The estimated temperature of the right front brake rotor.

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

Rough Road Parameter: The scan tool displays 0 to 1 g. The EBCM calculation of the road surface, this information is sent to the PCM via serial data messages. The PCM uses this information for misfire detection.

RR Normal Force: The scan tool displays 20%, 40%, 60%, and 80% High. The percent duty cycle of the right front normal force signal sent by the electronic suspension control module.

RR Rotor Temperature: The scan tool displays -40 to +650°C (-40 to +1202°F). The estimated temperature of the right front brake rotor.

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

Solenoid Relay Commanded State: The scan tool displays Off or On. Indicates the commanded state of the system relay.

Solenoid Relay Feedback State: The scan tool displays Off or On. Indicates the actual state of the system relay.

Steering Sensor Output to CVRSS: The scan tool displays 0 to 100%. The percent duty cycle of the steering wheel position signal sent by the EBCM to the electronic suspension control module.

Steering Wheel Angle: The scan tool displays -720 to +720 degrees. The angle that the steering wheel is turned in degrees.

Stop Lamp Switch: The scan tool displays Applied or Released. The state of the brake switch.

Switched System Battery Voltage: The scan tool displays 0 to 17 volts. The level of the internal EBCM switched battery voltage available to the solenoid valves and pump motor.

TCS Active: The scan tool displays Yes or No. The active status of the TCS. Indicates if TCS is currently active.

TCS Active Indicator/Message: The scan tool displays Off or On. Indicates if the EBCM is commanding the Traction Engaged message to be displayed by the DIC.

TCS Equipped: The scan tool displays Yes or No. Indicates if the vehicle is equipped with TCS.

TCS Failed: The scan tool displays Yes or No. The failed status of the TCS. Indicates if the EBCM disabled TCS due to a malfunction.

TCS Switch: Display Off or On. Indicates the status of the traction control switch.

TCS Warning Indicator/Message: The scan tool displays Off or On. Indicates if the EBCM is commanding the Traction Control indicator ON.

Torque Delivered Signal: The scan tool displays 0 to 100%. The duty cycle of the delivered torque signal. The duty cycle of the signal is used to transmit how much engine torque the PCM is delivering. Normal values are between 10 and 90 percent duty cycle. The signal is at low values (approximately 10 percent) at idle and at higher values under driving conditions.

Torque Request Signal: The scan tool displays 0 to 100%. The duty cycle of the requested torque signal. The duty cycle of the signal is used to transmit how much torque the EBCM is requesting the PCM to deliver. Normal values are between 10 and 90 percent duty cycle. The signal should be at 90 percent duty cycle when traction control is not active and at lower values (approximately 10 percent) when traction control is active.

Traction Control Status: The scan tool displays Active or Inactive. The active status of the TCS. Indicates if TCS is currently active.

Vehicle Yaw Rate - Engineering Units: The scan tool displays -75 to 75°/second. The yaw rate of the yaw rate signal.

VIN Packet No. 2: The scan tool displays the VIN packet No. 2.

VSES Active: The scan tool displays Yes or No. The active status of the VSES. Indicates if VSES is currently active.

VSES Active Indicator/Message: The scan tool displays Off or On. Indicates if the EBCM is commanding the Stability System Active message to be displayed by the DIC.

VSES Failed: The scan tool displays Yes or No. The failed status of the VSES. Indicates if the EBCM disabled VSES due to a malfunction.

VSES Failed Indicator/Message: The scan tool displays Yes or No. Indicates if the EBCM is commanding the Service Stability System message to be displayed by the DIC.

VSES Is Centered: The scan tool displays Yes or No. Indicates if the steering wheel is centered.

VSES On/Off Status: The scan tool displays Off or On. The status of the VSES On/Off switch signal.

Yaw Rate Sensor Input: The scan tool displays 0 to 5 volts. The yaw rate signal from the yaw rate sensor, roughly 2.5 volts equals 0°/second yaw rate.