Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Does this have an automatic transmission? If so, and the torque converter cover may be hitting. Remove it and listen if the noise goes away and while you are at it, check to make sure the bellhousing bolts are tight, the starter bolts are tight, torque converter to flexplate bolts are tight, etc.
Was it the torque converter cover hitting?
JustAnswer® is not a free service. I work hard to make sure you're satisfied with my service and I only get credit for my answers based on your rating. Once you're satisfied, please leave a positive rating.