Symptoms - Transfer Case

Symptoms - Transfer Case

Important: Review the system operation in order to familiarize yourself with the system functions.

Visual/Physical Inspection
^ Inspect for aftermarket devices, which could affect the operation of the Manual Selectable 4-Wheel Drive System.
^ Inspect the easily accessible, or the visible system components for obvious damage or conditions, which could cause the symptom.
^ Ensure all mechanical components are operative before diagnosing the electrical portion of the system.
^ In order to determine whether the vehicle is in 2-wheel drive (2WD) or 4-Wheel Drive (4WD), lift the vehicle so that the wheels can spin freely. With the transfer case control lever in 2HI, turn the rear propshaft. If the front propshaft does not move with the rear, the vehicle is in 2HI. If the tires and the front propshaft moves, the transfer case is actually in 4WD.
^ Make sure that the 4WD fuse is not open. If open, locate and repair the source of the overload. Replace the fuse.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Four-Wheel Drive Does Not Disengage Four-Wheel Drive Does Not Disengage
^ Four-Wheel Drive Does Not Engage Four-Wheel Drive Does Not Engage
^ 4WD Indicator Inoperative 4WD Indicator Inoperative
^ 4WD Indicator Always On 4WD Indicator Always On
^ Transfer Case Popping Noise Transfer Case Popping Noise
^ Transfer Case Whine or Rumble Noise Transfer Case Whine or Rumble Noise
^ Transfer Case Growl or Grinding Noise Transfer Case Growl or Grinding Noise
^ Transfer Case Clunk in 2HI Only Transfer Case Clunk In 2HI Only
^ Transfer Case Clunk in 4HI Transfer Case Clunk In 4HI
^ Transfer Case Clunk in 4LO Transfer Case Clunk In 4LO
^ Transfer Case Shudder or Binding Transfer Case Shudder or Binding
^ Transfer Case Will Not Shift Transfer Case Will Not Shift
^ Transfer Case Lumps Out of Gear Transfer Case Jumps Out of Gear
^ Transfer Case Leak Diagnosis Transfer Case Leak Diagnosis