Gooseneck/Fifth-Wheel Prep Package
CMT62 live listings
Median Towing Goose Score 68
Rating with this package: 18,500 lb gooseneck / 5th-wheel
2023 GMC Sierra 2500HD Towing Capacity
62 of 186 live listings carry the CMT Gooseneck/Fifth-Wheel Prep Package, read from the window sticker or OEM code. Updated hourly.
All five 2023 Sierra 2500HD trims in our catalog, the Pro, SLE, SLT, AT4 and Denali, are rated 18,500 lb conventional; the Pro runs the 6.6L gas V8 on a 3.73 axle and the others the Duramax diesel on 3.42. CMT, the gooseneck / fifth-wheel prep package, is rated 18,500 lb gooseneck. Z6A appears on this page too, but without a figure: our verified sources give it more than one gooseneck rating for 2023, so the page shows the code and leaves the number out rather than pick one.
Live listings with tow equipment
Counted only when the package shows on the truck's window sticker or in its OEM option codes, not in dealer text.
GOOSENECK/5TH WHEEL PACKAGE
Z6A73 live listings
Median Towing Goose Score 68
Top Towing scores among them
Why this score?
Tow rating by trim
| Trim | Engine | Drive | Axle | Conventional (lb) | Gooseneck (lb) |
|---|---|---|---|---|---|
| AT4 | 6.6L Duramax Diesel | 4WD | 3.42 | 18,500 | — |
| Denali | 6.6L Duramax Diesel | 4WD | 3.42 | 18,500 | — |
| Pro | 6.6L V8 | 2WD | 3.73 | 18,500 | — |
| SLE | 6.6L Duramax Diesel | 4WD | 3.42 | 18,500 | — |
| SLT | 6.6L Duramax Diesel | 4WD | 3.42 | 18,500 | — |
One catalog configuration per trim. Each trim comes in several engine, axle, cab and bed combinations with different ratings; a truck's own window sticker has its exact ones. A dash means the figure isn’t in our catalog or isn’t confirmed against an OEM source.
Factory tow packages
Verified packages with an OEM order code and what they change for towing. A rating is shown only where every verified source for that code agrees.
Gooseneck/Fifth-Wheel Prep Package
CMTTrims not listed in our catalog
- Gooseneck / 5th-wheel rating with the package: 18,500 lb
- 5th-wheel / gooseneck prep
- Integrated trailer brake controller
62 live listings carry it.
GOOSENECK/5TH WHEEL PACKAGE
Z6ATrims not listed in our catalog
- 5th-wheel / gooseneck prep
- Integrated trailer brake controller
73 live listings carry it.
Integrated Trailer Brake Controller
JL1Trims not listed in our catalog
- Integrated trailer brake controller
Fewer than 20 live listings carry it.
Gooseneck and 5th-wheel
- CMT Gooseneck/Fifth-Wheel Prep Package — 18,500 lb gooseneck / 5th-wheel rating with the package; on 62 live listings.
- Z6A GOOSENECK/5TH WHEEL PACKAGE; on 73 live listings.
Tow ratings are catalog figures checked against OEM towing guides and order guides; a truck's window sticker is the final word. How Goose scores trucks