Alientech KESS3 2026: GM and AC Delco Updates

What Do the 2026 GM Updates Cover?

In Alientech’s January–February 2026 upgrade series, GM accounts for a total of 6 protocols. Most add new Bench support, while E67 receives Boot mode. This allows OBD, Bench, and Boot options to be evaluated together within the same ECU families.

What Does Bench Support Bring to the Workshop?

On GM platforms, Bench mode provides direct access through the ECU connector without opening the control unit. Compared with OBD, it offers a more controlled working environment; compared with Boot, it requires less intervention. It shortens processing time especially in performance sedans, premium SUVs, and pick-ups, and creates a more reliable workflow for repeated connections.

In the field, GM customer profiles are broad — from US-import pick-ups and SUVs to Opel/Holden compact models. Extending Bench support to the E82, E84, E92, and E39 families gives workshops serving different segments operational flexibility within the same KESS3 infrastructure.

AC Delco E39 — High-Performance Platforms

Upgrade 2.82 adds Bench support for E39 units. Previously manageable via OBD and Boot, these ECUs now offer direct read/write access through the connector.

• Connection: Bench
• Production: 2010 and later
• Brands: Chevrolet, GMC, Saab
• Example models: Chevrolet Camaro, Equinox; GMC Terrain; Saab 9-5

E39 is a platform commonly seen in performance-focused and premium use cases. Bench support reduces in-workshop intervention time on sport and upper-segment GM vehicles.

AC Delco E39A — Global GM Sedans and Crossovers

Upgrade 2.83 brings Bench support for E39A. Covering Buick, Cadillac, Chevrolet Malibu, Holden, Opel, and Vauxhall, this ECU family has wide distribution in international GM markets.

• Connection: Bench
• Production: 2010 and later
• Brands: Buick, Cadillac, Chevrolet, Holden, Opel, Vauxhall

For workshops serving Opel-based GM models in Europe and Turkey, E39A Bench support can mean additional workload on import and local stock.

AC Delco E67 — Full Access via Boot

Upgrade 2.84 adds Boot mode to the E67 family. Used across a wide engine range from 2.4 to 6.2 litres since 2006, E67 is one of GM’s most common ECU families.

• Connection: Boot (in addition to existing OBD support)
• Production: 2006 and later
• Brands: Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Isuzu, Pontiac, Saturn

Example model coverage: Buick LaCrosse, Lucerne; Cadillac CTS-V, DTS, XLR; Chevrolet Camaro ZL1, Impala, Trailblazer; GMC Acadia, Envoy; Holden Commodore VE; Hummer H3; Pontiac G6, G8; Saturn Aura, Vue, and more.

E67 Boot support opens an alternative path for configurations where OBD is limited or full access is required. Boot operations require technical experience and the correct wiring diagram; the protocol guide must always be followed.

AC Delco E82 — 3.6 V6 Platform

Upgrade 2.85 makes E82 units manageable in Bench mode. Widely used on 3.6-litre V6 engines from 2016 onwards, this ECU is common on sedans, SUVs, and sports cars in the US market.

• Connection: Bench
• Production: 2016 and later
• Brands: Buick, Cadillac, Chevrolet, GMC, Holden
• Example models: Buick LaCrosse, Regal; Cadillac ATS, CTS, CT6, XT5, XTS; Chevrolet Blazer, Camaro, Colorado; GMC Acadia, Canyon; Holden Commodore

E82 Bench support provides repeatable procedures for daily workshop operations on mid-to-upper GM segments.

AC Delco E84 — Compact EcoTec and Flex

Upgrade 2.86 adds Bench mode for E84. Used on compact GM models with 1.0, 1.4 EcoTec, and 1.8 Flex engines.

• Connection: Bench
• Production: 2016 and later
• Brands: Chevrolet, Holden, Opel
• Example models: Chevrolet Beat, Onix, Prisma, Spark, Spin; Holden Spark; Opel Karl

Heavily used in Latin America and European compact segments, E84 can generate steady workload on urban and economy-segment vehicles.

AC Delco E92 — V8 SUVs and Pick-ups

Upgrade 2.87 adds Bench support to the E92 family. Used on large SUVs and pick-ups with 6.2-litre V8 engines from 2015 onwards, E92 sits in GM’s high-value segment.

• Connection: Bench
• Production: 2015 and later
• Brands: Cadillac, Chevrolet, GMC
• Example models: Cadillac CTS-V, Escalade; Chevrolet Camaro, Silverado, Silverado 1500, Suburban, Tahoe; GMC Sierra 1500, Yukon, Yukon XL

E92 Bench support is a significant expansion for workshops seeking full engine management control in the premium SUV and pick-up segment.

OBD, Bench, and Boot — Which Mode When?

Alientech Suite shows which mode is available for the selected vehicle and ECU. Before any operation, check the wiring diagram, required cable, and power supply in the protocol guide.

Operational Benefits for Your Workshop

• Segment diversity: From compact Opel Karl to Cadillac Escalade — broad GM portfolio on one KESS3 infrastructure.
• Bench efficiency: Direct connector access without opening the ECU on E39, E39A, E82, E84, and E92 families.
• E67 Boot: Full-access alternative across the wide 2006+ GM range.
• Import opportunity: Additional workload potential on US pick-up/SUV and European Opel-based stock.
• Backup discipline: Full backup before Bench and Boot operations is critical.

What Do You Need to Work on GM with KESS3?

To use GM / AC Delco protocols:

• Alientech KESS3 device and active license
• Relevant car protocol package enabled on the license
• 144300KOBD OBD-II cable for OBD operations
• 144300KBNC multiwire cable and 144300KTER extension set for Bench/Boot
• Regulated power supply for bench work (1400K3ALIM or equivalent)
• Current Alientech Suite software

For new workshop setups, our guide on what you need to open a chip tuning workshop covers device, cable, and license planning in detail.

Frequently Asked Questions

Do existing KESS3 users receive GM updates automatically?

With an active license and up-to-date Alientech Suite, protocol updates become available. The relevant car protocol package must be included in the license scope.

What is the difference between E39 and E39A?

Both are different AC Delco platforms that received Bench support. E39 is used mainly on models such as Camaro, Equinox, Terrain, and Saab 9-5; E39A on global GM models such as Opel, Vauxhall, Holden, and Malibu.

Why was Boot added for E67 and not Bench?

E67 has been supported via OBD for many years. Upgrade 2.84 adds Boot mode for full access in complex configurations. Unlike Bench, Boot requires deeper intervention.

Do I have to remove the ECU in Bench mode?

In Bench mode the ECU is usually removed from the vehicle but the cover is not opened; connection is made via the connector. Follow the protocol guide instructions.

Do GM import pick-ups (Silverado, Sierra) benefit from these updates?

E92 Bench support covers V8 pick-up and large SUV models such as Silverado, Sierra, Suburban, Tahoe, and Yukon. Confirm model year and ECU version in Alientech Suite.

Are Opel Karl or older Opel models covered?

E84 Bench support covers Opel Karl. E39A Bench targets broader Opel/Vauxhall GM platforms. Confirm model year and ECU type in the protocol list.

Which cables are required for Bench/Boot?

144300KBNC main multiwire cable, 144300KTER extension set, and a regulated bench power supply are essential. Use 144300KOBD for OBD operations.

Who provides device and training support?

At Nitro Bilişim we supply KESS3, handle license activation, plan cable sets, and provide hands-on training and technical support.

Conclusion

The 2026 GM / AC Delco updates strengthen KESS3 with Bench and Boot access across a broad GM portfolio — from compact EcoTec models to V8 pick-ups. This six-protocol wave opens a concrete expansion area for workshops that want to serve performance sedans, premium SUVs, pick-ups, and European compact segments within the same device ecosystem.

If you are planning a KESS3 investment, the right protocol package, bench/boot cable set, and license configuration determine your setup from day one. At Nitro Bilişim we support you with pre-installation needs analysis, device supply, and field training.