• Close-up photo of 2008-2009 Chevrolet Silverado 1500 trailer brake control module 20850923, VIN-programmed to resolve DTC C1112 and stabilize towing brakes with visible connectors and frame mount.
  • Front view of a 2008-2009 Silverado TBCM, part 20850923, showing the black plastic housing and electrical connection ports for trailer brake control.
  • Front view of a 2007-2009 Silverado 2500 TBCM, part 25907533. This pre-programmed trailer brake module fixes dash warnings and restores towing safety.
  • 2008-2009 Sierra 1500 TBCM, part 25907533. VIN-programmed trailer brake control module to fix "Service Trailer Brake" warnings and restore towing safety.
  • Programmed 2008-2009 Sierra 1500 TBCM, part 25854535. This trailer brake control module fixes "Service Trailer Brake System" warnings and ensures safe towing.
  • Pre-programmed 2008-2009 Sierra 1500 TBCM, part 25788981. Shows the main housing and electrical connectors for a plug-and-play installation.
  • VIN-Programmed 2008-2009 Sierra 1500 TBCM, part 20850923. Shows module and connectors for a direct-fit solution to 'Service Trailer Brake' errors.
  • Front view of a 2008-2009 Sierra Denali TBCM, part 25907533, showing the black casing and electrical connector ports. This module is pre-programmed to fix trailer brake errors.
  • VIN-Programmed 2008-2009 Sierra Denali TBCM, part 25854535. Shows the black module housing and dual electrical connectors, ready for installation to restore safe towing.
  • VIN-Programmed 2008-2009 Sierra Denali TBCM, part 25788981, showing the main housing and electrical connector ports for a direct-fit installation.

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