If the odometer is working correctly (drive a mile it adds a mile) than everything from the trans to the speedometer head is working as it should and your issue is in the head.

What year truck are you wotking on?

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD