GMC Sierra Owners Manual
Radio Frequency Statement
This vehicle has systems that operate on a radio frequency that comply with Part 15 of the Federal Communications Commission (FCC) rules and with Industry Canada Standards RSS-GEN/210/220/310.
Operation is subject to the following two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including interference that may cause undesired operation of the device.
Changes or modifications to any of these systems by other than an authorized service facility could void authorization to use this equipment.