When you check your truck odometer for a replacement, note the gear taper that turns the five numbered mileage wheels on the odometer assembly. Some have straight gears and others tapered. Each have 15 teeth.
The rule on Chevrolet, GMC and other GM vehicles is as follows:
If the odometer gear teeth are straight cut, the unit fits below the speedometer needle shaft.
If the odometer gear teeth have a tapered cut, the odometer assembly fits above the speedometer needle shaft. The different teeth “cannot” be interchanged.
Here are a few examples:
Chevrolet truck odometer has “straight” cut gears (odometer below speedometer shaft)
Chevrolet truck odometer has “tapered” cut gears (odometer above speedometer shaft)
Tapered verses straight cut gears. Both gears shown on and off odometer.
