Hi there I'm aiming the headlights on my 09 sierra and have a weird problem. Up close on a wall or something similar the driver side looks a little higher but from 25 and more there level. Can anybody explain this. Thanks

 

Light scatter.
When aiming your headlights without the machine its supposed to be within 3-5'
I just use a level floor in the shop.and a brick wall. Make sure your tire pressures are even