You should be able to understand what was wrong and what was fixed...and this should be ON the work order/receipt they give you. People tend to be tentative about asking, and assume it is because they 'don't know car stuff' that they don't understand...so they just sign the invoice and take the shiny car.

My point of bringing this us, if it reoccurs or becomes an issue, you will only have the receipt to establish what was done...

GL

A