- 2018–2019 Factory-verified
pairs with MW7, GT4 and the 10,000 lbs GVWR (C7A) in the 2018 guide's engine and axle tables; 445 hp (332 kW) at 2800 rpm and 910 lb-ft (1220 Nm) at 1600 rpm in the 2018 and 2019 guides; includes exhaust brake (K40) and engine block heater (K05); 2018: GM's 2018 Sierra 2500HD order guide; 2019: named in the 2019 interior page's package contents or footnotes
L5P Factory-verified
Also documented for Chevrolet
Documented applications
- 2020–2026 Factory-verified
includes engine block heater (K05); 470 hp (350.5 kW) at 2800 rpm and 975 lb-ft (1322 Nm) at 1600 rpm in the 2025 and 2026 guides; GM Authority gives 445 hp and 910 lb-ft for 2020 to 2023 and 470 hp and 975 lb-ft from 2024; 2020 to 2024: GM Authority Sierra HD model-year pages; Denali Ultimate: S; Pro, SLE, SLT, AT4, AT4X, Denali: O
This page aggregates every documented appearance of L5P in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.