• Programmed Allison Transmission Control Module for a 2001-2005 Silverado 2500 HD.
  • Pre-programmed 2001-2005 Sierra 3500 TCM for Allison transmissions, showing the main connector ports.
  • Programmed Allison Transmission Control Module TCM for 2001-2005 Chevy Silverado and GMC Sierra 2500 3500.
  • Pre-programmed 2001-2005 Silverado 3500 transmission control module for Allison transmissions.
  • Programmed Transmission Control Module (TCM) for 2001-2005 Silverado 2500 and Sierra 2500/3500 with Allison transmission.
  • Programmed 2001-2005 Silverado Sierra Allison TCM mounted on the fan shroud.
  • Programmed Allison Transmission Control Module (TCM) for 2001-2005 Chevy Silverado and GMC Sierra 2500/3500 HD trucks.
  • Programmed 2001-2005 Silverado 2500 transmission control module for Allison M74.

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