Brakes, power, heavy duty

Years 1973–82, 1984–87, 1989–96, 2005–09, 2014–27 Models 10 Factory citations 46

Also described as HD power brakesBrakes, Brembo 4-piston front, performance, 4-wheel antilock, 4-wheel discBrakes, heavy dutyBrake system, heavy dutyBrakes, performance 4-wheel antilock disc (Z51)Brakes, Z51 performanceBrakes, heavy-duty 4-wheel antilock, 4-wheel discBrakes, heavy-duty

Also documented for Cadillac GMC

Documented applications

C/K Trucks

1973–82 Confirmed

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Camaro — Gen 6 Alpha (2016–2024)

2016, 2019, 2023 Factory-verified

GM factory document — 2016 chevrolet camaro fleet order guide wayback, p.1.
GM factory document — 2019 chevrolet camaro fleet order guide wayback, p.7.
GM factory document — 2023 chevrolet camaro fleet order guide wayback, p.4.

C/K pickup — Square body (1983–1991)

1984–1987 Factory-verified

GM Heritage factory kit — 1984 Chevrolet Truck, p.43.
GM Heritage factory kit — 1985 Chevrolet Truck, p.45.
GM Heritage factory kit — 1986 Chevrolet Truck, p.160.
GM Heritage factory kit — 1987 Chevrolet Truck, p.57.

Corvette — C4 (1984–1996)

1990–1996 Factory-verified

1990–1991 from the brake legends of the specification pages (1990 p.81, 1991 p.36: Base JL9 and Heavy Duty J55 systems); 1992–1996 from the service lists; 1989 is not claimed: only the preliminary 1989 engineering and product-direction pages print it, and the 1989 brake page (p.155) prints it as 155

GM Heritage factory kit — 1990 Chevrolet Corvette, p.81.
GM Heritage factory kit — 1991 Chevrolet Corvette, p.36.
GM Heritage factory kit — 1992 Chevrolet Corvette, p.32.
GM Heritage factory kit — 1993 Chevrolet Corvette, p.18.
GM Heritage factory kit — 1994 Chevrolet Corvette, p.63.
GM Heritage factory kit — 1995 Chevrolet Corvette, p.103.
GM Heritage factory kit — 1996 Chevrolet Corvette, p.62.

Corvette — C6 (2005–2013)

2005–2009 Factory-verified

GM factory document — 2005 chevrolet corvette rpo code list, p.1.
GM factory document — 2006 chevrolet corvette rpo code list, p.1.
GM factory document — 2007 chevrolet corvette rpo code list, p.1.
GM factory document — 2008 chevrolet corvette rpo code list, p.1.
GM factory document — 2009 chevrolet corvette rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Corvette, p.22.
GM Heritage factory kit — 2006 Chevrolet Corvette, p.25.

Corvette — C7 (2014–2019)

2014–2019 Factory-verified

only in: Stingray with Z51; all trims: S; 2016, 2019: from GM order-guide copies (Corvette Action Center; 2019 also GM Authority)

GM factory document — 2014 chevrolet corvette stingray fleet order guide wayback, p.1.
GM factory document — 2015 chevrolet corvette fleet order guide wayback, p.13.
GM factory document — 2017 chevrolet corvette fleet order guide wayback, p.1.

Corvette — C8 (2020–2027)

2020–2027 Factory-verified

only in: Stingray

GM factory document — 2020 chevrolet corvette stingray order guide copy corvetteblogger, p.40.
GM factory document — 2021 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet corvette stingray order guide copy corvetteblogger, p.51.
GM factory document — 2023 chevrolet corvette stingray z06 order guide copy corvetteblogger, p.94.
GM factory document — 2024 chevrolet corvette stingray z06 e ray order guide copy corvetteblogger, p.151.
GM factory document — 2025 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet corvette fleet order guide rpo codes, p.3.

Chevy Van — Second generation G-series (1983–1996)

1984, 1986, 1987, 1989 Factory-verified

standard on G20–G30.

GM Heritage factory kit — 1984 Chevrolet G Van, p.16.
GM Heritage factory kit — 1986 Chevrolet G Van, p.62.
GM Heritage factory kit — 1987 Chevrolet G Van, p.42.
GM Heritage factory kit — 1989 Chevrolet G Van, p.11.

Silverado — T1XX (2019–2026)

2023–2026 Factory-verified

GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.11.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.14.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Tahoe — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: Police Package: S; printed by the Tahoe police package and special service guides, not by the retail and fleet guides; the police guides read heavy-duty brake system with front Brembo calipers and 16 inch front rotors

GM factory document — 2025 chevrolet new tahoe police package and special service fleet order guide, p.6.
GM factory document — 2026 chevrolet tahoe police package and special service fleet order guide, p.6.
GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.6.
GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.11.
GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.11.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.7.

This page aggregates every documented appearance of J55 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.