I have an 05 cab over w/ a 320 hp cummins.
The digital speedo that gives you trip miles hrs and rd. mi. and needle speed quit working.
There is a sener on top of tranny can anyone tell me how to test this system before I spend 250.00 for a new speedo?
Also when I turn key on and wait for gauges to set before I start truck sometimes the ceck eng. lite comes on sometimes not the dealer couldnt find a code.
Once in a while when gearin up the motor wont let me go over 30 mph in sixth gear, I have to pull over and turn off truck to reset before continuing.
Any help would be great thanks
