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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> Fuel Rail Pressure (FRP) Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Supporting Fuel Rail Flange With Back-Up Wrench
    GM1237298Courtesy of GENERAL MOTORS CORP.
  1. Install the sensor (2) into the fuel rail (4) with a new O-ring. Lubricate the O-ring with petroleum jelly.
  2. Support the fuel rail flange (4) with a back-up wrench (3) while tightening the sensor (2) with a crowfoot and torque wrench.

    Tighten:  Tighten the sensor to 9 N.m (80 lb in).

  3. Connect the sensor electrical sensor.
    4. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  4. Install the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical in the C/K Pickup service manual.
  5. Start the vehicle and inspect for CNG fuel leaks at the serviced fitting using the J 45878  or an equivalent leak detector. See Special Tools and Equipment .
    6. Fig 2: View Of Top Engine Cover
    GM665886Courtesy of GENERAL MOTORS CORP.
  6. Install the engine sight shield.
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