Really having some issues with my 2004 titan 4x4. When the truck hits 5th gear and I hit a hill or push the gas to jump into overdrive the whole cab shakes like a misfire or its slipping. I can go ahead and push the gas a little further and it will go ahead and jump into overdrive. It's throwing no codes on my dash whatsoever. I can run the truck in 4th gear and it will not do it at all. I've had every place but the dealership run diagnostics on it with no luck. Anyone have similar issues or know what I can do to fix it?
My dad also had a similar issue to this on his 04 and it turned out being corroded grounds. His was a one hit intermittent wonder, that the dealership found so I wouldn't think it would be bad grounds...but you never know.