Browse GMC Sierra 2500HD Pickup Oil Transfer Pump. Find GMC Sierra 2500HD Pickup Oil Pumps Replacement & GMC Sierra 2500HD Pickup Oil Pumps. Maintaining the oil pump in your GMC Sierra 2500HD Pickup is crucial for engine longevity; regular checks and timely oil changes prevent wear and ensure efficiency. Be alert to low oil pressure warnings and unusual noises, which could signal the need for a replacement. When choosing a new pump, opt for durable materials like high-grade aluminum that promise reliability and are designed for your specific model. Gear and rotor pumps offer unique benefits, with gear pumps providing consistent flow and rotor pumps excelling in low-viscosity performance. Proper installation by following manufacturer guidelines can significantly extend the life of your oil pump, keeping your Sierra's heart in robust health.