Having problems with your 2007 Cadillac CTS 3.6L ?
My radieo is coming on but nothing is coming out of the speakers
These cars are known for the sound system amplifiers going out. That is what produces the sound. Check for blown fuses and if they are all ok you may need a new amplifier
Repair Help & Product Troubleshooting for 2007 Cadillac CTS 3.6L
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