GM DS 6.5L Fuel Injection Pump These pumps go through a thorough re-manufacturing process and get reassembled to OE specifications. Components are completely cleaned, inspected, and tested. Worn or damaged components are replaced with new to ensure maximum quality and longevity. Pumps are also quality inspected and tested to OE specifications to ensure your vehicle gets back on the road as soon as possible. The encoder sensors are 100% reworked due to the age of the vehicle population and core. This rework addresses cold solder joints that cause latent or intermittent failures. A stand-alone test is then performed on each encoder, ensuring a signal quality above the industry standard. The pump is also tested as a full assembly before being shipped to install on your vehicle. Tier 1 Rebuild: This pump is our Tier 1 rebuild. The minimum standard that we accept for remanufacturing of a DS4 injection pump. This pump differs from cheaper alternatives for these reasons: 100% Rework of encoder sensor (optic sensor). Sensor is repaired vs just replacing with a used one and hoping it will last. (See details below) Remanufactured optic sensors are exclusive to Flight Systems as they are the only company who performs that service Brand New PMD wiring harness Brand New Injection Timing Stepper Motor Brand New Engine Shutoff Solenoid (ESO/ESS) Fully tested and calibrated to OE spec 1 Year Unlimited mileage warranty through the manufacturer, to the original purchaser Built and tested in Pennsylvania, USA CORE DEPOSIT REQUIRED This is the DS-5521 model. Interchange part numbers are all as follows. DS4-5288, 5459, 5521, 5942, 10238969, 12552621, 12561307, 17800077, 12561405, 12558156, 17800114, 19208317, 19208315, 10225930, 19209059. 1994-2002 GM Trucks, Vans, Hummers, and some later model Hummers as well. Pump model number cross references can be found in the Knowledge Base link above
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