If I co-signed on a signature loan for my son with no collateral. The loan was for 1,500.00 and he had an unpaid balance of $300.00. Is it legal for the credit union to repossess my tahoe? Because that's exactly what they did. The loan was 6 yrs old and they made me pay them $1,200.00 to get me tahoe back. I live in Texas, is this legal?