OEM GMC Envoy Fuel Pressure Regulator

GMC Envoy Fuel Pressure Regulator Parts Questions & Experts Answers

• Fuel Pressure Regulator
  88894176
  Q: How to service and repair the fuel pressure regulator on GMC Envoy?

  A: The fuel pressure relief procedure should be followed before starting to service or fix the Fuel Pressure Regulator. First remove the air cleaner outlet resonator along with engine wiring harness clips at the front of the engine. You should start by disconnecting the vacuum line on the Fuel Pressure Regulator before cleaning the regulator in addition to its surrounding area from debris. The procedure starts with disconnecting the fuel return pipe while removing its retainer followed by the Fuel Pressure Regulator retainer for taking out the Fuel Pressure Regulator. Check the filter screen of the regulator for impurities because a dirty screen requires replacement of the Fuel Pressure Regulator. The first step for installation involves putting the regulator filter and a new o-ring on the Fuel Pressure Regulator and lubricating the o-ring with clean engine oil. Put the Fuel Pressure Regulator inside the regulator housing on the Fuel Rail then attach the Fuel Pressure Regulator retainer by screwing it to 8 n.m (71 lb in). You should first install the fuel return pipe retainer while tightening its screw to 8 n.m (71 lb in) before connecting the fuel return pipe and the Fuel Pressure Regulator vacuum line. To inspect leaks you should turn on the ignition for 2 seconds and off for 10 seconds and finally on again to check for fuel leaks after reconnecting the negative Battery Cable. The last step includes placing the front engine wiring harness into retaining clips while also reinstalling the air intake resonator.