• 2004 Envoy PCM 12586242 engine computer module with three main electrical connector ports visible.
  • Front view of a pre-programmed 2004 Envoy XL PCM Module, part number 12586242, showing the main electrical connectors.
  • A programmed 2004 Envoy XL PCM, part number 12586242, ready for installation.
  • 2004 Envoy XL PCM 12586242 Electronic Control Module for GM trucks and SUVs.
  • A 2004 Envoy XL PCM, part number 12586242, ready for VIN programming and installation.
  • Pre-programmed 2004 Envoy PCM 12586242 ready for installation in a GM truck or SUV.
  • Programmed 2004 Envoy XL PCM, part number 12586242, ready for installation in a GM truck or SUV.
  • VIN-Programmed 2004 GM PCM Engine Computer Module 12586242 for Silverado, Tahoe, and Envoy.
  • 2004 GM Engine Computer PCM 12586242 for Silverado, Sierra, Tahoe, and Envoy models.
  • A pre-programmed 2004 Envoy Engine Computer, part number 12586242, ready for installation.
  • 2004 Envoy XL ECM 12586242 showing the main connectors and part number label.
  • A 2004 Sierra 1500 PCM, part number 12586242, pre-programmed and ready for installation.
  • Programmed 2004 Sierra 1500 PCM with service number 12586242, ready for installation in a GM truck.
  • Programmed 2004 GMC Sierra 1500 PCM Engine Computer 12586242.
  • Programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation on a workbench.
  • Pre-programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation in a GM truck.
  • Pre-programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation.
  • Programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation.
  • Programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation in a GM truck.
  • A pre-programmed 2004 Sierra 1500 PCM, part number 12586242, ready for installation.

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