1995 Other Oldsmobile Models code scanner

Welcome to the forum. If your datalink connector looks like the picture below, you may be able to access mil codes without special tools. You place a jumper wire between A & B terminals of the datalink connector. Turn the key just till the dash lites come on, no further, the mil starts flashing, you count the flashes to get the codes. example, a code 21, two quick flashes, slight pause, one flash. It should repeat three times before moving to next code, if there is one.