1998 Other Oldsmobile Models Check Engine Light-Timing Belt?

Engine problem
1998 Other Oldsmobile Models Engine Size unknown Front Wheel Drive Automatic 10000 miles

I have an Oldmobile 88-Year 1998 (with a little over 100,000 miles), and I was driving home from the holidays-and as I neared my home it started idling really rough and the check engine light began blinking. I live in MN and it's really cold, but the temp gauge-fluid levels, and everything else on my car were normal. I managed to get it into my parking lot, but my car shut off. Now it idles and cranks, but it doesn't turn over. I have yet to hook up an ODB-II reader to it to figure out what the code is. The only thing that I could have done to cause any problems would be having to back out of a large pile of snow and strain my engine because I got stuck. It was running fine, but after I drove it a few miles to my house it began idling rough, the check engine light came on, and then it shut off. Could it possibly be the timing belt? I know I have to take it in, but I was wondering if anyone has any idea what the problem could be.

Thank you!