C1438 – Transfer Case Differential Clutch Worn

C1438 Possible Symptoms

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

C1438 Possible Causes

Worn Transfer Case Differential Clutch,Faulty Transfer Case Assembly,Faulty Final Drive Control Module (FDCM)

C1438 Description

The Final Drive Control Module (FDCM) is unable to fully lock the T-Case (in Either High or Low) because the T-Case clutch is worn.