KESS3 Protocols Releases

AC Delco E67 in BOOT mode: large-displacement GM platforms.

The first part of this series concludes with the release dedicated to AC Delco E67 ECUs.

30.01.2026 — Upgrade 2.84

This development focuses on the many GM platforms from 2006 onwards, covering a wide range of engines from 2.4 to 6.2 liters.

Alongside the already available OBD communication, BOOT mode is now introduced, designed to ensure full access to the ECU even in the most complex configurations. An update that significantly expands operational possibilities on SUVs, sedans, and ultra high-performance vehicles in the American market, providing stable and reliable procedures on one of the most widespread ECU families within the GM group.

A concrete solution to effectively handle operations on vehicles that have historically been complex and highly valuable for workshops.

Technical focus

  • Connection: BOOT
  • ECU: AC Delco E67
  • Production years: from 2006
  • Brands involved: Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Isuzu, Pontiac, Saturn

Supported vehicles ECU

  • Buick Lacrosse, Lucerne, Rainier, Terraza, Verano
  • Cadillac CTS-V, DTS, XRS, STS, XLR
  • Chevrolet Camaro ZL1, Impala, Montecarlo, Trailblazer, Uplander
  • GMC Acadia, Envoy, Savana
  • Holden Commodore VE
  • Hummer H3
  • Isuzu Ascender GMT360, Ascender GMT370
  • Pontiac G6, G8, Grand Prix, Montana
  • Saturn Aura, Ion, Outlook, Relay, Sky, Vue

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