RE: 2000 Chevy Venture intermittant transmission whine
Could be a number of things. On the highway, it is revvingaround or over3000 rpm? If so, the splines on the 4th gear hub are stripped. The trans is then stuck in 3rd and the pumpstarts whining. If it is making it into 4th gear, then the shift solenoids are acting up. Either way, prepare yourself for a tranny job, it needs to be dissassembled to fix. While your in there, might as well rebuild it....