Hello...just bought a used Silverado, took it on vacation recently. In RPM range of 1600-2000 and speeds of 60-65 MPH the cab shudders and vibration is evident. Once you get to 70 MPH or 2000 RPM, it all but goes away. Same thing before you get to the RPM/MPH range mentioned. Any ideas?
Oct 12, 2008 at 3:43 AM
