Operation CHARM
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GMC Truck
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1999
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Safari Van 2WD V6-4.3L VIN W
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Repair and Diagnosis
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Maintenance
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Service Intervals
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Routine Service
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At Least Twice A Year
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Differential Service
Differential Service
DIFFERENTIAL SERVICE
Check the gear lubricant level in the differential and add the proper fluid if necessary. A fluid loss may indicate a problem. Check the differential and repair if needed.