C4M Factory-verified

Chevrolet · Regular Production Option

GVW rating, 9,900 lbs (4 500 kg)

Years 2004–09, 2014–19, 2022–27 Models 7 Factory citations 40

Query this via API →

Also described as GVW rating, 9,900 lbs (4,500 kg)GVWR, 9900 lbs. (4491 kg)GVW rating, 9,900 lbGVWR, 9,900 lbs (4490 kg)

Also documented for GMC

Documented applications

Express — GMT610 (2003–2027)

2014–2018, 2022–2027 Factory-verified

the 2025–2027 guides read GVWR, 9900 lbs. (4490 kg); S: Cutaway 1WT (2027), Cutaway CG33503 (2025–2026), Cutaway 1WT CG33803 (2025–2026); O: Cargo CG33705, Passenger CG33706; not offered: Cargo CG23405, Cargo CG23705, Cargo CG33405, Cutaway 2WT (2025–2026), Cutaway 1WT CG33903 (2025–2026), Passenger CG23406, Passenger CG33406

GM factory document — 2014 chevrolet gh van elec bbm si brief, p.6.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.11.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.5.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.5.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.15.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.12.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.13.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.13.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.11.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.31.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.6.
GM factory document — 2025 chevrolet express passenger fleet order guide, p.24.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.11.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.33.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.6.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.26.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.31.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.4.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.24.

Silverado EV — BT1 (2024–2027)

2026–2027 Factory-verified

2026: S in 4WT; not offered in 5WT, 8WT, 2LT, 3LT, 4LT, 2TR, 3TR, 2SP, 3SP; 2027: S in 4WT; not offered in 5WT, 8WT, 2LT, 3LT, 2TR, 3TR

GM factory document — 2026 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.16.
GM factory document — 2027 chevrolet silverado ev fleet order guide, p.14.

Silverado — GMT800 (1999–2007)

2004–2007 Factory-verified

2005–2007: heavy-duty models only (GM’s HD list)

GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2004 Chevrolet Silverado, p.64.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.59.

Silverado — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT800 (2001–2007)

2004–2007 Factory-verified

GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Silverado 3500HD, p.193.

Silverado HD — GMT900 (2007–2014)

2007–2009 Factory-verified

GM factory document — 2007 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

only in: 2500HD; Crew Cab 4WD long box with the 6.0L V8, or Regular Cab with the Duramax diesel; 2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.3.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.3.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.3.

This page aggregates every documented appearance of C4M in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.