JL1 Factory-verified

GMC · Regular Production Option

Trailer brake controller, integrated

Years 2009, 2014–27 Models 17 Factory citations 65

Query this via API →

Also described as Control, integrated trailer brake

Also documented for Cadillac Chevrolet Pontiac

Documented applications

Canyon — Second generation (GMT31XX) (2015–2022)

2016–2017, 2019, 2021–2022 Factory-verified

2016: SLE, SLT: O; SL, Canyon: not offered; with LWN; not on extended cab; 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2016 gmc canyon fleet order guide wayback, p.2.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.11.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.10.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.11.

Canyon — Third generation (VSS-T) (2023–2027)

2023–2027 Factory-verified

S on all trims

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.11.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.11.
GM factory document — 2025 gmc canyon fleet order guide, p.6.
GM factory document — 2026 gmc canyon fleet order guide, p.7.
GM factory document — 2027 gmc canyon fleet order guide, p.7.

Hummer EV Pickup (2022–2027)

2025–2026 Factory-verified

GM factory document — 2025 gmc hummer ev pickup fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027)

2025–2026 Factory-verified

GM factory document — 2025 gmc hummer ev suv fleet order guide, p.5.
GM factory document — 2026 gmc hummer ev suv fleet order guide, p.6.

Sierra EV — BT1 (2024–2027)

2025–2027 Factory-verified

2025: included with and only available with ZL6

GM factory document — 2025 gmc sierra ev denali fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra ev denali fleet order guide, p.6.
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.11.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

all trims: S

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.8.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2009, 2014 Factory-verified

the 2014 guides call it the integrated trailer brake controller

GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.4.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.4.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified

2015 marks: Sierra: O; SLE, SLT: S; 2015 3500HD: Sierra, SLE, SLT: O; 2018: GM's 2018 Sierra 2500HD order guide; 2019: GM's 2019 Sierra 3500HD order guide

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.4.
GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.3.
GM factory document — 2019 gmc sierra 3500hd order guide copy gm authority, p.3.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: S

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.10.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.10.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.8.

Sierra — K2XX (2014–2019)

2014, 2016–2019 Factory-verified

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.22.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.89.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.39.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.11.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.12.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.12.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.11.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.14.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.11.
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 — GMT900 (2007–2014)

2009 Factory-verified

GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

Yukon — K2XX (2015–2020)

2015–2019 Factory-verified

SLE, SLT: part of NHT; Denali: S in 2018; 2019 from the Graphite Performance Edition (YF0) contents; 2018 from GM's 2018 Yukon order guide

GM factory document — 2015 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2016 gmc yukon denali fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.22.
GM factory document — 2019 gmc yukon denali fleet order guide wayback, p.1.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.34.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: AT4 Ultimate, Denali Ultimate: S; Elevation, AT4, Denali: O

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.19.
GM factory document — 2026 gmc yukon denali fleet order guide, p.20.
GM factory document — 2027 gmc yukon fleet order guide, p.19.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

SLE, SLT: A, only with NHT

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.4.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.9.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.22.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: AT4 Ultimate, Denali Ultimate: S; Elevation, AT4, Denali: O

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.19.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.20.
GM factory document — 2027 gmc yukon xl fleet order guide, p.19.

This page aggregates every documented appearance of JL1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.