DIAGNOSIS CHART
CONDITION
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POSSIBLE CAUSE
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CORRECTION
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Transfer case noisy in all drive modes.
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1) Insufficient, aged, or incorrect lubricant.
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1) Drain and refill transfer case with the correct quantity and type of fluid.
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2) Internal transfer case components binding, worn, or damaged.
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2) Repair or replace components as necessary.
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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 seals. Inspect and replace, if necessary, the seal slinger on the output flange associated with the damaged seal.
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