Many credit unions are notorious for placing cross collateral clauses in their car loans. Signing an agreement with a cross collateral clause means that you are putting up the vehicle as collateral for both the car loan and any other loans or lines of credit you may obtain with the credit union. Many clients are unaware that their car loan contains small print indicating that the vehicle is not only security for the car loan but for any other line of credit or loan with the credit union. Cross-collateral clauses can become a serious problem in bankruptcy because many credit unions will require you to reaffirm both the car loan and any cross collateral loans in order to keep the vehicle.