In my 1980 C10 looooooonnnnnggg bed 2wd, I am hearing some strange noises when driving. I know it's 30 yrs old and all but I need to see if anyone else has the same experiences. Between 45-55 mph, there is a bumping sound right underneath the driver's side floor board. I suspect the speedo cable but not real sure. At slow speeds, like in parking lots and such, there is a metal popping noise that seems to come from under the cab. Sometimes, after I get out, the frame or something underneath will pop after a few seconds. Could new cab mount bushings correct this? Just checking to see if anyone else has the same problems. Any suggestions are greatly appreciated. Thanks.
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