Compass Data

With the Base Radio the Telematics Control module provides compass and GPS position information on the LS-GMLAN / Info-CAN bus when it is present.

In a Mid / High Radio System configuration without a Telematics Control Module and equipped with GPS, the radio shall provide the GPS and heading information on LS-GMLAN / Info-CAN as shown below.

An external Remote Compass Module (RCM) is required to transmit the heading and position information on LS-GMLAN / Info-CAN if either:

• The Base Radio is present in a system configuration with no Telematics control module.
• The radio variant without GPS is present in a system configuration with no Telematics control module.