Genuine GMC Sierra Throttle Body

GMC Sierra Throttle Body Parts Questions & Answers

• Fuel Injector Fuel Motor Body Kit
  12603371
  Q: How to inspect and clean a throttle body on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?

  A: Remove the air intake duct and inspect the throttle body for carbon build-up. If dirty, clean with a sensor-safe solvent. Disconnect the throttle body's electrical connector, remove its mounting fasteners, and discard the old gasket. Install in reverse order, using a new gasket and tightening to torque specifications. Start the engine to check the throttle body's operation and ensure no air leaks.
• Throttle Body Assembly (W/ Throttle Actuator)
  12615503
  Q: How to remove the Throttle Body and Fuel Injector on V6 Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?

  A: To remove the upper intake manifold, first disconnect the negative battery cable and relieve fuel system pressure. Disconnect various electrical connectors, including those for the EVAP canister purge solenoid and MAP sensor, and remove the PCV crankcase ventilation hose. Remove the upper intake manifold mounting bolts and throttle body mounting studs, and discard the old gasket. To remove the fuel pulsation damper, remove the retaining clip and pull it out of the Throttle Body, then discard the old o-ring. To remove the throttle body and injectors, remove the fuel supply line and various seals, detach the injector poppet nozzles, and remove the injector retainer nuts and retainer. Installation for all components is the reverse of removal, using new gaskets and o-rings where necessary and tightening fasteners to proper torque specifications.