Supersedes Technical Service Bulletin Group 96 number 13-64 dated June 20, 2013. The customer is able to program one or more of the Homelink buttons using their garage door remote, but after a few days or weeks, one or more of the programmed Homelink buttons no longer functions. The LED on the Homelink button that is no longer functioning now flashes slowly, indicating that no programming is stored. The customer's transmitter operates at 295Mhz. No DTCs are stored in any control units. At the workshop, the Homelink system can be programmed to the workshop garage door successfully. No trouble is found. The garage door opener control module, J530, was designed with an operational frequency range in which the 295Mhz frequency works correctly during the initial programming of the system. Over time, the transmitting frequency can drift out of range (especially in warmer climates), causing the system to lose its programming.
