I hope this solves the mystery... The original 16 channel CLCC Motorola radios are public safety (fire & police) grade, FCC type accepted radios. They are not programmed out of the box. Motorola proprietary software is required to program Motorola radios. Chirp will not work. CLCC started using the radios before the "Midland" standard GMRS channel plan was introduced. So, our frequencies are compatible but our channel numbers are different.
So here is the GCLC channel plan:
GCLC is not using any repeaters so the repeater channels on the CLCC radios will not work
GCLC is not using any coded squelch (CTCC, DCS, PL) on their channels = carrier squelch. See the trick below to make this work with the CLCC radios.
The freqs in the 145 - 146 band are Amateur Radio (Ham) frequencies. An FCC Amateur Radio license is required to transmit on those freqs.
Here is the CLCC channel plan with the compatible GMRS/GCLC channels:
Now, here is the process to disable the coded squelch on the Motorola radios so they can receive the transmissions from the GCLC radios that do not have the coded squelch enabled. Press the middle button, the LED will flash orange after transmiting or changing channels to let you know the coded squelch is disabled.
Hope this helps.