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HOMESERVICE MANUALSGMC2009CANYON 4D PICKUP, 2.9 9REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 3.7L - INTRODUCTION, SERVICE & REPAIR)REPAIR INSTRUCTIONSFUEL INJECTION FUEL RAIL ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE
2009 GMC Canyon 4D Pickup, 2.9 9

Installation Procedure

2009 GMC Canyon 4D Pickup, 2.9 9SECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Fuel Injector Lower O-Ring Seals
    GM1772114Courtesy of GENERAL MOTORS CORP.
  1. Lightly lubricate the NEW lower O-ring seals with mineral oil GM P/N 9981704.
  2. Install the NEW O-ring seals onto the tip of each injector.
    3. Fig 2: View Of Fuel Rail To Cylinder Head
    GM1772116Courtesy of GENERAL MOTORS CORP.
  3. Position the fuel rail to the cylinder head, insert the spray tip ends of the fuel injectors into the cylinder head.
    4. CAUTION: Refer to Fastener Caution .
  4. Install the fuel rail bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    5. Fig 3: View Of Engine Wiring Harness Electrical Connectors
    GM1765153Courtesy of GENERAL MOTORS CORP.
  5. Connect the engine wiring harness electrical connector (1) to the fuel injector harness electrical connector.
  6. Install the intake manifold. Refer to Intake Manifold Replacement .
    7. Fig 4: View Of EVAP Canister Purge Pipe, Throttle Body Module & EVAP Canister Purge Solenoid Valve
    GM1352026Courtesy of GENERAL MOTORS CORP.
  7. Connect the EVAP purge tube to the throttle body control module (2) and the EVAP canister purge solenoid valve (3). Refer to Plastic Collar Quick Connect Fitting Service .
    8. Fig 5: View Of Fuel Feed Line Quick Connect Fitting
    GM1772037Courtesy of GENERAL MOTORS CORP.
  8. Connect the fuel feed line quick connect fitting (1) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  9. Inspect for leaks.
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.