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Home >> Chevrolet >> 2012 >> Tahoe PPV >> Repair and Diagnosis >> External Pages >> Different car >> Section 1677 (Engine Mechanical - 6.6L (LMM) - Repair Instructions - Off Vehicle (2 Of 3)) >> Fuel Injection Pump Cleaning and Inspection

Fuel Injection Pump Cleaning and Inspection

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Fuel Injection Pump Adapter & Bolts
    GM663766Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel injection pump adapter bolts.
  2. Remove the fuel injection pump adapter.
    3. Fig 2: View Of Fuel Injection Pump & Adapter O-Rings
    GM663767Courtesy of GENERAL MOTORS CORP.
  3. Remove the O-ring from the fuel injection pump and discard.
  4. Remove the O-ring from the fuel injection pump adapter and discard.
  5. Clean the fuel injection pump adapter mating surfaces.
  6. Clean the fuel injection pump mating surfaces.
  7. Inspect the fuel injection pump and adapter for damage.
  8. Replace component if any damage is found.
  9. Install a new O-ring onto fuel injection pump.
  10. Install a new O-ring onto fuel injection pump adapter.
  11. Lubricate the O-rings with engine oil.
    12. Fig 3: View Of Fuel Injection Pump Adapter & Bolts
    GM663766Courtesy of GENERAL MOTORS CORP.
  12. Install the fuel injection pump adapter to the fuel injection pump.
    13. CAUTION: Refer to Fastener Caution .
  13. Install the fuel injection pump adapter bolts and tighten to 21 N.m (15 lb ft).
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