I found one of these as well at the pull a part a few days back. If you still have the cassette player its hilarious to listen too. The intro music makes it feel like 1994 again lol
Any luck? I would suggest changing the CDM under the dash that controls the headunit. I attached a link to a forum that will show you which numbers match for the different styles. I had a single din radio when I bought my 94 Blazer. I hated it and hooked up the original radio. Hope this helps...
Much appreciated @kennythewelder I'm was thinking about trying the bypass filter and did some research on these as well. I quickly eliminated it being alternator/engine noise due to the fact that the pitch never changed with RPM's and it would do the exact same thing when the truck was not...
Update!
When I refer to CDM, I am talking about the brains of the radio under the dash next to the gas pedal. This controls the headunit and cassette player(its basically an amplifier). Its called that because of the number associated with the box. I believe its the part numbers. Anyways I...
I have a 94 Full Size blazer. It had an aftermarket JVC single din radio in it when I bought it. For a while now I've been wanting to use the stock radio to keep it original so today that's what I did. I went to the junk yard and bought the factory cassette player with no EQ adjustment out of a...