Where is the transmission control module located on a 2008 Chevy Silverado 5.3L 4wd?

The transmission control module (TCM) on a 2008 Chevy Silverado 5.3L 4WD is typically located under the dash on the driver's side, mounted on the transmission itself. It may also be found near the firewall, above the accelerator pedal. For exact location and access, it's advisable to consult the vehicle's service manual or a repair guide.