When I start my truck, the gauges do a self test , but the speedometer never goes to zero, so my speed is off by 10-15 pretty much every time. Sometimes it does but lately always off. How can I fix this? I use to tap on the speedometer and occasionally it would go to zero.
04 freightliner Columbia speedometer
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by sergk1989, Dec 16, 2021.