Understanding the Transfer Case Control Module The transfer case control module (TCCM) is a crucial component in 4WD vehicles, responsible for overseeing the shifting in four-wheel-drive system operations. It uses speed sensors to determine the vehicle’s speed and enable the shift between two-wheel and four-wheel drive. Understanding how it functions will help you diagnose potential issues. Locating the TCCM in Your Vehicle The TCCM is typically found near the control panel on the driver’s side, close to the steering column. …
