GM Radio Outputs -- NOT original. (Page 1/1) Brivander DEC 11, 09:07 AM Anyone know if this GM radio has RCA outs? It was installed by the previous owner and I’m not near the car. Curious if I can run RCA cables to a sub or I need to use speaker wire pick-ups. RWDPLZ DEC 11, 06:41 PM It does not, just standard GM radio wiring.