LPO, brake upgrade, front 6-piston Brembo with color-matched rear calipers

Years 2019–20, 2022–27 Models 5 Factory citations 22

Also described as LPO, front and rear performance brake kitLPO, brake kit, performance, front and rearLPO, front brake kit, performance

Also documented for Cadillac Chevrolet

Documented applications

Sierra EV — BT1 (2024–2027)

2027 Factory-verified

includes red Brembo 6-piston front brake calipers (GMC logo on the front calipers), dealer-installed

GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide, p.22.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

Pro, Elevation 3SB, AT4, Denali, Denali Ultimate: O (ADI available); Elevation 3VL, AT4X: not offered; Red Brembo 6-piston front calipers with larger pads and rotors, GMC logo on the front calipers, rear calipers color-matched Red; dealer-installed

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.50.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

the 2019–2024 lists read "Accessory, brake upgrade package 1, complete"

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.9.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.9.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.10.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.9.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.10.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.8.
GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.9.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.9.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.39.
GM factory document — 2026 gmc yukon denali fleet order guide, p.41.
GM factory document — 2027 gmc yukon fleet order guide, p.36.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: O on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.9.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.9.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.42.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.43.
GM factory document — 2027 gmc yukon xl fleet order guide, p.37.

This page aggregates every documented appearance of 5JL in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.