truck has a irritating humming vibrating kind of noise felt more in the front, hard to pin point where its coming from. It happens only at 1000rpm in drive. in park it will not do it. vehicle has to be moving. temperature makes no difference. Once your driving and the rpm goes past 1000 the noise seems to disappear. the wheel bearings seem fine. the truck is a 1999 chevy silverado 1500 4.3L longbox
it is almost impossible to solve without hearing it in person, but some things to check are the front brakes, front wheel bearings, tires, and loose suspension parts.
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I have a 1997 Z71 chevy pick up - it has shift on the fly 4 wheel drive - I can not get it to engage...
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I have a 1997 Z71 chevy pick up - it has shift on the fly 4 wheel drive - I can not get it to engage - driving or standing still - also I need to replace the lightbulb for the shift area and don't know how to get at the light bulb