I am struggling with journal entries for the purchase of a vehicle by a company that owns 80% of outstanding stock in a company. There is a goodwill of $16,000 included.

Truck was original purchased for $40,000 with no salvage value and useful life of 8 years. Truck was sold for $18,000 and has an estimated three-years remaining life. Straight line depreciation method was used.

Journal entry is :

Cash 18000

Truck 15000

Profit on sale 3000

Journal entry for second company:

Truck 18000

Cash 18000

I feel like I should be doing something with depreciation

Consolidated entry between companys

Truck to Co 1 18000

Truck to Co 2 15000

Goodwill 3000

Hopefully this makes sense. I feel like I am missing so information that needs to be added.