Theft-deterrent system, immobilizer

Years 2004–06, 2008–09, 2017–19, 2023, 2025–26 Models 9 Factory citations 22

Also described as Equipment, security system, immobilization, step twoEngine immobilizer, theft-deterrent systemImmobilizer, engineEquipment, security system, immobilization

Also documented for Buick GMC Pontiac

Documented applications

Aveo — T200 (2004–2008)

2004–2006, 2008 Factory-verified

kits: engine immobilizer, theft-deterrent system; the 2008 list reads engine immobilizer; ; ; ;

GM Heritage factory kit — 2004 Chevrolet Aveo, p.24.
GM Heritage factory kit — 2005 Chevrolet Aveo, p.25.
GM Heritage factory kit — 2006 Chevrolet Aveo, p.25.
GM factory document — 2008 chevrolet aveo rpo code list, p.1.

Aveo — T250 (2009–2011)

2009 Factory-verified

GM factory document — 2009 chevrolet aveo rpo code list, p.1.

Blazer EV (2024–2027)

2025 Factory-verified

GM factory document — 2025 chevrolet blazer ev fleet order guide rpo codes, p.1.

Bolt EV — first generation (2017–2023)

2017, 2023 Factory-verified

LT, Premier: S

GM factory document — 2017 chevrolet bolt ev fleet order guide wayback, p.2.
GM factory document — 2023 chevrolet 23 bolt ev body builder sm en us 2022aug26, p.8.
GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.8.
GM factory document — 2023 chevrolet bolt euv fleet order guide wayback, p.1.

Cruze — second generation (2016–2019)

2018–2019 Factory-verified

2018: sedan S on all; hatch S on all; 2019: sedan S on all; hatch S on all

GM factory document — 2018 chevrolet cruze order guide copy gm authority, p.66, p.69, p.84.
GM factory document — 2019 chevrolet cruze order guide june 1 2018 copy gm authority, p.49, p.52, p.68.

Sonic — first generation (2012–2020)

2017–2019 Factory-verified

all trims: S

GM factory document — 2017 chevrolet sonic order guide copy gm authority, p.62.
GM factory document — 2018 chevrolet sonic order guide copy gm authority, p.68.
GM factory document — 2019 chevrolet sonic order guide may 4 2018 copy gm authority, p.61.

Spark — M400 (2016–2022)

2017–2019 Factory-verified

all trims: S; 2018 from GM's 2018 order guide

GM factory document — 2017 chevrolet spark order guide copy gm authority, p.4, p.21.
GM factory document — 2018 chevrolet spark order guide copy gm authority, p.6, p.28.
GM factory document — 2019 chevrolet spark order guide copy gm authority, p.5, p.28.

TrailBlazer — GMT360 (2002–2009)

2008, 2009 Factory-verified

GM factory document — 2008 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet trailblazer 2wd rpo code list, p.1.

Trax — Second generation, VSS-F (2024–2026)

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 chevrolet trax fleet order guide, p.5.
GM factory document — 2026 chevrolet trax fleet order guide, p.5.

This page aggregates every documented appearance of BAH in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.