There is a loud buzzing noise in the cab that seems to come from the speakers when the radio is on or the blinkers are used.
Mar 24, 2015 at 2:56 PM
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HMAC300
CERTIFIED EXPERT
48,601 POSTS
check battery to body ground it's on right side near radiator mount rh sides I passenger side. also make sure there is a ground cable going to hood from body.