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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 908 (Engine Controls And Fuel - 6.6L (LMM) - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Wiring Harness Electrical Connector, Bracket & Extension Clip
    GM1872490Courtesy of GENERAL MOTORS CORP.
  1. Remove the exhaust gas recirculation (EGR) valve cooler. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  2. Remove the right exhaust pipe. Refer to Exhaust Pipe Replacement - Right Side (6.6L) .
  3. Disconnect the engine wiring harness electrical connector (1) from the fuel rail fuel pressure sensor wiring harness extension electrical connector.
  4. Remove the fuel rail fuel pressure sensor wiring harness extension clip (3) from the wiring harness bracket.
    5. Fig 2: View Of EGR Valve Cooler Rear Bracket
    GM1873193Courtesy of GENERAL MOTORS CORP.
  5. Remove the EGR valve cooler rear bracket bolts and bracket.
    6. Fig 3: View Of Fuel Rail Fuel Pressure Sensor Wiring Harness Extension & Pressure Sensor
    GM1873194Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the fuel rail fuel pressure sensor wiring harness extension (1) from the fuel rail fuel pressure sensor.
  7. Prior to removal, clean the fuel rail fuel pressure sensor and surrounding area thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463) or equivalent.
  8. Using compressed air, thoroughly blow dry the sensor and surrounding area.
  9. Remove the fuel rail fuel pressure sensor (2).
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