Can you be arrested for repossession of a car?
If so, then yes, you can.
If you meant 'can you be arrested for repossessing a car?" you can't as long as you have a permit/license to do so and conduct yourself in a lawful manner duriong the actual repossession.
Added; In potentially violent situations, repossessors will sometimes call law enforcement and ask them to 'stand by' while they take the vehicle, but only to prevent a breach of the peace. Law enforcment will play no part in assisting in the actual repossession of the vehicle, inasmuch as repossession is done under a civil court order, and is not a criminal matter