Transfer Case Problems of Chevrolet K2500

Vehicle is 2001 Chevrolet silverado 2500 hd with 6. 6l duramax diesel and allison automatic transmission. At approximately 88,000 miles / approx 2500 hours, the transfer case hydraulic pump wore through the rear half of the transfer case, resulting in large amount of transmission fluid being released on the underside of the vehicle. Since the oil is flammable and it gets sprayed all over the bottom of the vehicle (including the exhaust system) it probably presents a fire hazard. . Read more...

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Routine maintenance revealed a leak in the transfer case. This lead to discover a small hole in the case. This is caused by a part defect that breaks over time. Usually around 85,000 to 105,000 miles. The part is an "anti-rattle clip" that prevents the inner pump from of course rattling. When this part breaks, the pump then rubs a hole from the inside out. If this is not caught in time, the lubricating oil would run dry and this would lead to a drivetrain malfunction. I will be ordering a replacement transfer case. Yes old part will be available. Note: as of yet, the replacement part for this has no modifications to prevent this from happening again.

See all problems of the 2002 Chevrolet K2500 🔎.