Hey everyone,
I have a 1996 GMC Sierra 4x4 that I recently purchased(about 5 days ago) I bought it from a used truck dealer. Yesterday I experienced the following problems and I'm looking for verbage, suggestions, or ideas on what this could be. The vehicle I'm referring to is an automatic with 133000 miles on it.
When sitting at a stand still and then accelerating the truck takes off fine but when the transmission shifts into second gear the truck has a hard lunge feeling.(almost like being hit from behind) It only does it between first and second gear. Yesterday was the first time the truck has done this since I bought it 5 days ago. I also was able to make it stop doing it...by going over a speed bump at a fairly fast clip...I know that sounds stupid...but the bumping seemed to correct it...cause now its not doing it...could a plate or something in the transmission housing be sticking or something...
Thanks for any input you can provide
Ross