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Home >> Buick >> 2011 >> Lucerne Super >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 4.6L - Repair Instructions >> Repair Instructions >> Exhaust Gas Recirculation Pipe Replacement >> Removal Procedure

Removal Procedure

NOTE:

The exhaust gas recirculation (EGR) valve inlet pipe incorporates a crush seal connection at the water pump housing. The EGR valve inlet pipe must be replaced if disconnected from the water pump housing.

    Fig 1: Identifying EGR Valve Inlet Pipe
    GM1666841Courtesy of GENERAL MOTORS COMPANY
  1. Remove the EGR pipe bolt at the water pump housing.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Loosen the EGR pipe nut at the exhaust manifold.
  4. Remove the EGR valve pipe.
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