This is how to enable the system to show truck details such as Fuel burn, Hubometer, Operating hours and Wheelbase and Diff ratio.
There are changes to be made in Franchise data, the vehicle class needs to be Commercial and vehicle type either needs to be amended to Light or Heavy. This is so that in a Commercial and Passenger environment, Passenger cars will show Colour and Trim and Commercial vehicles will show as Wheelbase and Diff ratio.
Go into CS > AK > CRM > System parameters and tick "Extra components tab"
Once enabled all Commercial vehicles in CRM will show Wheelbase and Diff Ratio, instead of colours and trim
On the Secondary details tab the Fuel burn, Hubometer and operating hours will appear
You may need to create a CS.AK.vehic file if this does not exist.