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Posts Tagged: TSB 99-04-1-005A

Transfer Case Shudder GM trucks

Transfer case shudder GM has issued a TSB (#99-04-1-005A) for 1999-01 Chevrolet and GMC L-Van models and Oldsmobile Bravada equipped with the NV136 transfer case. The symptom is a vibration or “shudder” that occurs during tight turning on dry pavement and at speeds less than 5mph. The problem has been linked to what GM calls “Slip-stick.” That’s where the clutch plates in the transfer case bind and then release. The TSB calls for flushing the transfer case fluid with new Auto-TrakII fluid (blue in color). First drain the transfer case … Read More

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