The vehicle has the 3.8 engine, 253,000 miles on it. It has developed stiffness in the gear selector. There is no stiffness when pulling the gear selector arm toward the driver to take it out of gear, but it is stiff when selecting the different gears or putting into Park. Does anyone have any...

Replaced my battery after troubleshooting some slow starting problems. (ruled out alternator and starter). Since then, all heck broke loose. Transmission started downshifting in a jerky way periodically (around 2K rpms). Transmission shop did a "relearn" and pulled a P1739 error code ("Power...