No Volume control or tuning,just changed the booster,what could have i touched under there to stop the thing from changing stations etc..

 

The stock radio is considered an electrostatic sensitive device. Perhaps some current pulse or static discharge got to it.

I had mine go out because of two nickles that had been bouncing around in there for years. I suspect the previous owner's kids or grandkids did it. LOL

I later found another nickle in the cassette player.

 

I found a post from a yr ago with them talking about a silver box near gas pedal or behind ash tray..

 

Vendo , first thing that comes to mind is protect mode. Not sure if it applies to this radio, but the first thing I'd try is pulling the radio fuse for about 5 minutes , then put it back in to see if it works.

 

the battery was disconnected for a little while,was thinking of disconnecting it again and see if that fixes it,its really weird.

 

check this out,mine is doing same..stuck at 98.1
1992 chevy truck radio not working - Discussion on Topix