LPO, flat splash guards, rear molded with GMC logo

Years 2014–15, 2017, 2023–27 Models 5 Factory citations 12

Also described as LPO, flat splash guardsLPO, flexible off-road splash guardsLPO, Splash guards, flat, blackLPO, Splash guards, flat

Also documented for Chevrolet

Documented applications

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

2025: AT4: O; Elevation, Denali: not offered; 2026–2027: AT4: O; Elevation, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc acadia fleet order guide, p.19.
GM factory document — 2026 gmc acadia fleet order guide, p.19.
GM factory document — 2027 gmc acadia fleet order guide, p.21.

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

2023–2024, 2026–2027 Factory-verified

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.12.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.13.
GM factory document — 2026 gmc canyon fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc canyon fleet order guide rpo codes, p.1.

Sierra EV — BT1 (2024–2027)

2027 Factory-verified

not available with VQK

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.19.

Sierra HD — K2XX (2015–2019)

2015 Factory-verified

dealer-installed; Sierra, SLE, SLT: O

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.3.

Sierra — K2XX (2014–2019)

2014, 2017 Factory-verified

Black.

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.30.

This page aggregates every documented appearance of SB1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.