GM Service Manual Online
For 1990-2009 cars only

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 Voltage: The scan tool displays volts. The scan tool displays a range from 0 to 25.5 volts.

Est. RDS clutch Spd. Variation: The scan tool displays 1/min. The scan tool indicates a range from -640 to 635 RPMs.

Estimate clutch Temperature: The scan tool displays °C. The scan tool indicates a range from -40 to 215 °C .

LF Wheel Speed Sensor: The scan tool displays 0-160 km/h (0-99.5 mph). 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 (0 mph).

LR Wheel Speed Sensor: The scan tool displays 0-160 km/h (0-99.5 mph). 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 (0 mph).

Rear Drive Solenoid Cmd. : The scan tool displays °C. The scan tool indicates a range from -40 to 215 °C.

Rear Drive System Temperature Sensor: The scan tool displays °C. The scan tool indicates a range from -40 to 215 °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 (0-99.5 mph). 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 (0 mph).

RR Wheel Speed Sensor: The scan tool displays 0-160 km/h (0-99.5 mph). 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 (0 mph).

Vehicle Speed: The scan tool displays 0-1024 km/h (0-636 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving.