While driving on the road I was attempting to merge into highway traffic when the transmission went to shift gears (this is an automatic transmission). The truck went to downshift upon accelerating up and dropped out of gear (gear shift still in drive), the rpms went up very high, as if in neutral. I let off of the accelerator and it eventually dropped into gear. The transmission began making noises and I ended up having it towed to the dealer because it would not go into any gear. The dealer, miller brothers Chevrolet, replaced some parts, including a cracked input housing, and returned the truck to me. Not long after I returned the truck with problems shifting between gears; also when it would downshift when accelerating. They returned the truck to me saying they could not duplicate the problem. The very next day it was doing the same thing and I drove it to the dealer and demanded that a service representative ride with me in the vehicle. I did not need to drive very far beyond the dealer's lot when the representative said to turn around and take it back. He could feel and hear what was happening. They returned the truck to me again after replacing another part. Once again, it beagain with the same problem and is currently at the dealer (6/21/99).

- Catonsville, MD, USA