Sorry in advance for the long post.
So I think I may have a problem with my trans. On monday my wife was on her way to work when she called and told me that she was hearing an unusual sound coming from the car when accelerating. Knowing that she can be a little paranoid about the car since it is the only one we have and I use it for pizza delivery I figured it was nothing. So later when I am heading to work I notice the sound too. It is kinda hard to describe but the best I can manage it sort of a grinding whine. Now I am starting to get paranoid so i start paying closer attention to the tach. That is when I noticed that if I am cruising along at a steady speed and give it a little gas to accelerate the tach will jump about 500 rpm then slowly settle back to anywhere from where it was at prior to gassing it or as much as 200 rpm lower. The car would continue to accelerate the entire time, even as the rpms were dropping. you could even hear the engine rev up then slowly rev down.
So I take it to my dealership since the drivetrain is still under warranty. I tell them what is going on and they said they would look into it. I even took the tech on the test drive so I could point out exactly what I was concerned about. First the tech tried to tell me the sound I was hearing was my exhaust, which I know It wasn't. Then when I pointed out what was happening with the tach and the engine revving. He tried to tell me that it was just the car shifting. I def know better. I spend about 7 hours a day in my car and I can feel exactly when it shifts. None the less they insist that it is normal.
What I would like to know is if anyone else has experienced this and if so what if any cause was found? There is another chevy dealer nearby that I am going to be taking it too on tuesday and it would be nice if i could go in and possibly point them in the right direction.
So I think I may have a problem with my trans. On monday my wife was on her way to work when she called and told me that she was hearing an unusual sound coming from the car when accelerating. Knowing that she can be a little paranoid about the car since it is the only one we have and I use it for pizza delivery I figured it was nothing. So later when I am heading to work I notice the sound too. It is kinda hard to describe but the best I can manage it sort of a grinding whine. Now I am starting to get paranoid so i start paying closer attention to the tach. That is when I noticed that if I am cruising along at a steady speed and give it a little gas to accelerate the tach will jump about 500 rpm then slowly settle back to anywhere from where it was at prior to gassing it or as much as 200 rpm lower. The car would continue to accelerate the entire time, even as the rpms were dropping. you could even hear the engine rev up then slowly rev down.
So I take it to my dealership since the drivetrain is still under warranty. I tell them what is going on and they said they would look into it. I even took the tech on the test drive so I could point out exactly what I was concerned about. First the tech tried to tell me the sound I was hearing was my exhaust, which I know It wasn't. Then when I pointed out what was happening with the tach and the engine revving. He tried to tell me that it was just the car shifting. I def know better. I spend about 7 hours a day in my car and I can feel exactly when it shifts. None the less they insist that it is normal.
What I would like to know is if anyone else has experienced this and if so what if any cause was found? There is another chevy dealer nearby that I am going to be taking it too on tuesday and it would be nice if i could go in and possibly point them in the right direction.