| GM BT1 platform | |
|---|---|
 GMC Hummer EV, the first vehicle based on the BT1 platform | |
| Overview | |
| Manufacturer | General Motors |
| Production | 2021–present |
| Body and chassis | |
| Layout | Dual- & triple-motor, all-wheel-drive |
| Related | GM BEV3 |
TheGM BT1 platform, marketed underUltium branding, is a dedicatedelectric vehicle architecture orplatform developed byGeneral Motors (GM). It underpins electric full-sizepickup trucks andSUVs sold by GM, using battery and motor technology developed under itsUltium program; these are shared with third-generation GM electric vehicles on theBEV3 platform. BT1 is categorized as askateboard platform.
In October 2019, GM made an agreement with theUnited Auto Workers (UAW) union to invest US$3 billion inDetroit/Hamtramck Assembly over the next four years, renaming it to "Factory Zero" and converting it to a factory for electric trucks and vans.[1] The UAW's copy of the agreement revealed the "centerpiece" of the investment was a program internally called "Project O" or BT1, which would develop and begin selling a low-volume pickup truck by 2021, aimed at the high end of the market.[2]
The same platform developed for that project, which resulted in theGMC Hummer EV,[3] also would be used for electric versions of full-size General Motors pickup trucks (Chevrolet Silverado /GMC Sierra) and SUVs (Chevrolet Tahoe /Suburban,GMC Yukon, andCadillac Escalade).[4]
The BT1 platform is designed for full-size trucks and SUVs which currently use abody-on-frame architecture, whileunibody passenger cars and crossover utility vehicles will be based on BEV3; both platforms use Ultium batteries and motors.[5] However, Nichole Kraatz, the GM chief engineer for battery electric trucks, characterized BT1 as "not a unibody and ... not a body-on-frame", as the body has an integral floor, like a unibody, but rests on the battery structure, which also acts as a structural member.[6] This confirmed early speculation published in 2019.[7]
Despite its name suggesting a relation to theT1 platform,[4] BT1 shares no parts with the older internal combustion engine full-size pickup truck and SUV platform.[8]
As implemented for the GMC Hummer EV, BT1 has a stamped and welded steel battery case with 24 modules, totaling 246 kW-hr gross, of which 212 kW-hr are usable; the total weight of the battery alone is 2,800 lb (1,300 kg).[9]
'[BT1] is significantly different from T1 ... They are designing it [BT1] from the ground up as an electric platform,' [Sam Fiorani] added, meaning it likely won't have a separate frame with steel rails, but neither will it be unibody, a construction method most frequently used with cars, where the structure is one integrated assembly. Instead, it could be 'a little of each.'
In production | |
| Cars | |
| Trucks/SUVs | |
Retired | |
| Cars | |
| Trucks/SUVs | |
Future | |
| Cars | |
| Trucks/SUVs | |
| Divisions, subsidiaries |
|  | ||||||
|---|---|---|---|---|---|---|---|---|
| Shareholdings |
| |||||||
| Products, technologies |
| |||||||
| Former divisions, joint ventures, subsidiaries |
| |||||||
| Facilities | ||||||||
| People | ||||||||
| Sponsorship |
| |||||||
| Related topics | ||||||||
 | This electric vehicle–related article is astub. You can help Wikipedia byexpanding it. |
