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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1156 (Transfer Case - BW 4477) >> Repair Instructions - Off Vehicle >> Transfer Case Cleaning and Inspection >> Oil Pump and Suction Pipe Assembly Cleaning and Inspection

Oil Pump and Suction Pipe Assembly Cleaning and Inspection

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Oil Pump and Suction Pipe Assembly
GM1907948Courtesy of GENERAL MOTORS CORP.
Oil Pump and Suction Pipe Assembly Cleaning and Inspection

Callout Component Name

Preliminary Procedures

  1. Remove the oil pump suction hose from the screen and pump.
  2. Clean all components in solvent and air dry.
  3. Inspect components and perform any repair procedure necessary to fix the damage.
1 Transfer Case Oil Pump Assembly
Tip: 
  • Inspect the pump for free movement. Replace the pump if it is binding.
  • Do not disassemble the pump. The pump is serviced as an assembly.
2 Transfer Case Oil Pump Assembly Screen and Hose
Tip:  Inspect the screen and hose for cracks, tears, or debris.