One problem related to noises during shifting has been reported for the 1997 Chevrolet C/k Pickups. The most recently reported issues are listed below.
Driving down the road went to stop to back up and I placed the truck in reverse to back up I heard a loud noise as if I had backed into someone. (like metal to metal) so I immediately applied the brake and put the truck in drive to pull up to see if I had. Nothing in sight. So I eased the truck up a little, applied the brake and put the truck in reverse again. This time it would not move, in fact all you could hear was a chattering noise coming from the transmission. So I put it back in drive and went to pull off and you could hear the transmission whinning and would no shift gears. The only way I could get the truck to move was to put it all the way in low range and manually shift back up to drive. The transmission still did not operate correctly and had to be parked.