Colorado 4WD L5-3.5L VIN 6 (2005)
Speedometer Head: Description and Operation
SPEEDOMETER
The instrument panel cluster (IPC) displays the vehicle speed based on the information from the powertrain control module (PCM). The PCM converts
the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC receives a class 2 message from the PCM indicating the vehicle speed.
