Symptoms - Transfer Case

Important

Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify the following statements are true: – There are no diagnostic trouble codes (DTCs) set. – The control modules can communicate via the serial data link. Review the system operation in order to familiarize yourself with the system functions. Transfer Case Description and Operation Visual/Physical Inspection Inspect for aftermarket devices which could affect the operation of the automatic transfer case system. Checking Aftermarket Accessories Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. Inspect the automatic transfer case for the proper fluid level. Intermittent Faulty electrical connections or wiring may cause intermittent conditions. Testing for Intermittent Conditions and Poor Connections Symptom List Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom: Front Axle Will Not Engage Front Axle Will Not Disengage Transfer Case Shift Control Switch Malfunction Service Indicator Always On Transfer Case Range Actuator Learn Transfer Case Range Actuator Learn Transfer Case Popping Noise Transfer Case Banging Noise Transfer Case Whine or Rumble Noise Transfer Case Growl or Grinding Noise Transfer Case Grating Noise Transfer Case Clunk in 2HI Only Transfer Case Clunk in 4HI Transfer Case Clunk in 4LO Transfer Case Shudder or Binding Transfer Case Will Not Shift Transfer Case Jumps Out of Gear Transfer Case Leak Diagnosis