Hi, our 2018 Equinox LS lost audio a second time, 1/6/2025, last evening. A fix, for the 1st time thru GM tech service & Onstar, was to turn off car & leave door open at least 3 mins. It could be a software bug...but not sure. Last nite wife pulled in garage, left car door open, came in house. Several mins later she started car, radio back on. Why radio went out...dont know. Nobody can answer. Multi million $ company you'd think would know. But at least that 'fix' worked for us. There's about 82,000 miles on it.