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Transfer Case

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 1990 Pontiac Trans Sport, 1990 Oldsmobile Silhouette, 1990 GMC Vandura Special, 1990 GMC Vandura, and 1990 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.

Check transfer case lubricant at every oil change or every 12 months. Under severe conditions, check more frequently