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Credit Unions have something called the “Cross Collateral Clause”. It’s a special legal provision that other types of banks do not have. If you owe them money on one loan (or credit product) they can take assets from another loan product to pay it off.
Here is what the clause usually says in your loan docs:
“The collateral securing this loan shall also secure any and all other loans and accounts with the credit union.”
Basically even though you are current on your car payment, because you are behind on your other loan/credit payments they will take the car as collateral. Get an attorney who can help you now. You cannot wait.
As Morpho said - act now. They CAN take your car and likely will.