DIAGNOSIS CHART
CONDITION
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POSSIBLE CAUSE
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CORRECTION
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Transfer case difficult to shift or will not shift into desired range.
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1) Transfer case shift cable binding.
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1) Repair or replace cable as necessary.
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2) Insufficient or incorrect lubricant.
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2) Drain and refill transfer case with the correct type and quantity of lubricant.
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3) Internal transfer case components binding, worn, or damaged.
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3) Repair
or replace components as necessary.
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Transfer case noisy in all drive modes.
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1) Insufficient or incorrect lubricant.
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1) Drain and refill transfer case with the correct type and quantity of lubricant.
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Lubricant leaking from transfer case seals or vent.
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1) Transfer case overfilled.
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1) Drain lubricant to the correct level.
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2) Transfer case vent closed or restricted.
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2) Clean or replace vent as necessary.
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3) Transfer case seals damaged or installed
incorrectly.
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3) Replace suspect seal.
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Transfer case will not shift through
4X4 part time range (light remains on)
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1) Incomplete shift due to drivetrain torque load.
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1) Momentarily
release the accelerator pedal to complete the shift.
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2) Incorrect tire pressure.
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2) Correct
tire pressure as necessary.
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3) Excessive Tire wear.
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3) Correct tire condition as necessary.
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4) Excessive vehicle loading.
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4) Correct as necessary.
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