Purchase Chevrolet Silverado 1500 Pu Transfer gearbox parts catalog & Chevrolet Silverado 1500 Pu Transfer Case & Parts. Maintaining the transfer case in your Chevrolet Silverado 1500 Pu is critical for seamless 4WD performance, with regular fluid changes being paramount to ensure longevity. Watch for signs of wear such as unusual noises or difficulty in shifting between drive modes, which may indicate the need for replacement parts. When selecting a new transfer case component, be it chain-driven for smooth operation or gear-driven for durability, always prioritize OEM or high-grade aftermarket parts for compatibility and reliability. Installation requires precision, so follow the manufacturer's guidelines closely or seek professional assistance. By choosing the right parts and adhering to maintenance schedules, you can extend the life of your Silverado's transfer case, keeping your ride ready for any terrain.