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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 54 (Transfer Case - NVG 261-NP2 - Overhaul) >> Repair Instructions >> Cleaning and Inspection >> Oil Pump

Oil Pump

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  1. Clean the oil pump suction pipe, with the screen, in cleaning solvent and air dry. Do not remove the screen from the pipe.
    Fig 1: Removing Oil Pump Suction Pipe
    GM1348898Courtesy of GENERAL MOTORS CORP.
  2. If the screen is embedded with debris, replace the suction pipe assembly.
  3. Inspect the oil pump for the oil pump gears turning without binding.
  4. Replace the oil pump if there is any binding. Do not disassemble the oil pump. The oil pump is serviced as an assembly.