Review on Optimized Speaker Amplifier for GM Genuine Parts 20918769's Radio by Kristi Marshall

I bought this amp for my 2011 Cadillac SRX when the rear speakers stopped working. Installation takes a little effort, but it's worth not having to go to the dealer. Hundreds saved. The amplifier is also identical to the original. A big surprise was that after plugging it in, not only did all the speakers work again, but my defective reversing sensors also worked again.