What causes radio to cut out in 99 suburban radio has power no sound Ive tried a second known good radio any ideas?

Answer 1

I have a '95 Suburban and thought I had fried my aftermarket radio's internal amp, however after buying a new radio I still had the same problem. I then reinstalled the factory radio and the front and rear doors starting working again. A couple days later the rear doors starting working also. I then reinstalled my aftermarket radio and everything worked fine for a few weeks until one day I heard a pop and a fizz before all the stock speakers went out. Replaced the factory radio again until all the speakers worked, then installed the aftermarket. This time it only lasted a few days. Now only the fronts will play with the factory radio and none of the factory speakers function with the aftermarket.

The problem is with the suburban's factory amps. My research has only came up with one amp for the 95 and prior suburbans and later models having two amps. Just like any other audio component, they go bad over time.

It was too frustrating having to carry my factory radio just in case the factory amp fizzes out. I'm fed up and a factory replacement is nearly as much as an aftermarket. Therefore I am currently in the process of rewiring all of my speakers directly to an aftermarket multi-channel amp. Guess I'll upgrade the speakers while I'm in the process. Fix the problem for good and not have to worry anymore.