OEM Chevrolet Avalanche 2500 Fuel Injector

Chevrolet Avalanche 2500 Fuel Injector Parts and Q&A

• Injector
  12574927
  Q: How to service and repair a fuel injector on Chevrolet Avalanche 2500?

  A:

  Service and repair of the Fuel Injector starts by removing the Fuel Rail assembly together with the injector retainer clip before extracting the injector from the Fuel Rail pod. Keep the retainer clip and both injector o-ring seals (2, 4) for disposal. Caution must be exercised while working with the Fuel Injector electrical connector pins and nozzles because immersing the unit in any cleaner will risk damaging this electrical component. The presence of leaking fuel injectors leads to contamination of the engine oil. It is essential to select the correct Fuel Injector when making a replacement since the assembly bears identification markings that combine the part number with a 4-digit code showing the production month, day and year and manufacturing shift. The new injector o-ring seals (2, 4) need cleaning oil application before inserting into position with engine oil and then receiving a fresh retaining clip. The procedure ends with insertion of the Fuel Injector into the Fuel Rail pod while orienting the electrical connector towards the outside. The retainer clip should be positioned on a flange of the Fuel Rail injector socket before reinstalling the Fuel Rail assembly.
• Injector
  12580426
  Q: How to replace a fuel injector on Chevrolet Avalanche 2500?

  A:

  Begin Fuel Injector replacement by removing the Fuel Rail yet maintaining carefulness to avoid damaging both the Fuel Injector electrical connector pins along with nozzles thereafter avoid exposing the Fuel Injector to any cleaning substances due to its electrical nature. You should check for fuel leaks because contaminated engine oil could occur from failing fuel injectors. Undertake Fuel Injector retaining clip removal followed by extractor of the Fuel Injector from the Fuel Rail while discarding both injector o-ring seals (2, 4) located at its ends. The correct Fuel Injector should be chosen for installation since it carries a part number and a four-digit manufacturing date code displaying month and day of production and its manufacturing shift. Clean engine oil should be applied to new injector o-ring seals (2, 4) before installation to the injector which will be followed by a new retaining clip placement. The Fuel Rail installation ends with pushing the Fuel Injector into position through the Fuel Rail. Set its electrical connector outside while ensuring the retaining clip finds the flange on the Fuel Rail injector socket to complete reinstallation.