[ulfuric]

I recently purchased my first Cadillac and it has a few issues; radio not working, front and rear blower motors not working, rke not working intermittently. I've fixed the problem with the blower motors (bad components) and am still lost on the rke, but the main question I have is about the radio.
The car originally had a cd player/tape deck unit and it wasn't working, no display but still lit up and had proper voltage to it. I replaced it with another from the junkyard but with tape deck unit, both units are not bose. As soon as I plugged it in it gave me the theftlock message "lock", so I took it to the local dealer and had them reprogram the unit for my car. The radio now works sort of, I have display it functions properly except that it is very quiet and there is a lot of static.
I'm not sure if its a bad unit or if it could possibly be the radio amplifier thats the problem. Any help would be greatly appreciated!

 

[rodnok01]

Not sure but if has amp the HU may be different. Check the Amp fuse and see if any codes relating to it also.

 

[ulfuric]

Fuse is good and no codes relating to the radio. I pulled 3 codes; p0741 - tcc stuck off, p1660 - cooling fan control circuit fault, and p0302 - cylinder 2 misfire

Could the misfire be caused by running regular unleaded instead of premium? Car was low on the test drive and the salesman had me stop to fill up and I noticed he put regular in it.

 

[carnut]

Remove the radio fuse and count to ten and reinstall it. Rebooting sometimes works!