Recently it feels like my 2001 Pontiac montana Wont shift into overdrive. When going over 55 mph it is running close to 3000 rpms. It is also making a whining sound that seems to be coming from underneath. If I shift it down to 3rd gear it doesnt really do much as far as the rpms but the whine goes away.
Aug 27, 2008 at 7:30 PM