For 1990-2009 cars

The rear differential clutch control module (CCM) scan tool data definitions contain a brief description of all CCM related parameters available on the scan tool. The parameters available on the scan tool are listed below in alphanumeric order.

Accelerator Pedal Position Sensor: The scan tool displays a percent of pedal opening position. The scan tool displays a range from 0 to 100%.
Battery Volts: The scan tool displays volts. The scan tool displays a range from 0 to 25.5 volts.
Est. RDS Coupling Spd. Variation: The scan tool displays 1 min. The scan tool indicates a range from -640 to 635 RPMs.
Estimate Coupling Temperature: The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.
LF Wheel Speed Sensor: The scan tool displays 0-160 km/h. The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h.
LR Wheel Speed Sensor: The scan tool displays 0-160 km/h. The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h.
Rear Drive Solenoid Cmd. : The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.
Rear Drive System Temperature Sensor: The scan tool displays deg C. The scan tool indicates a range from -40 to 215 deg C.
Rear Drive Torque Command: The scan tool displays N-m. The scan tool displays a range from 0 to 2550 N-m.
RF Wheel Speed Sensor: The scan tool displays 0-160 km/h. The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h.
RR Wheel Speed Sensor: The scan tool displays 0-160 km/h. The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h.
Vehicle Speed: The scan tool displays 0-160 km/h. The scan tool displays 0 km/h when the vehicle is not moving.