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GM T1 Vehicle Platform

The T1 platform, otherwise known as GMT-T1 or T1XX, is a General Motors vehicle architecture designed for pickup trucks and body-on-frame SUVs.

The T1 platform replaces the GM K2 platform and made its debut on the 2019 Chevrolet Silverado and 2019 GMC Sierra.

Names: GM T1 platform, GMT-T1, T1XX
Predecessor: GMT-K2 platform
Successor: GM VSS-T
Type: Body on frame
Size: Full Size
Supported vehicle type: Pickup truck or SUV
Layout: Front-Engine, 2WD (RWD) and 4WD
Powerplant layout: Longitudial
Debut date: 2019 model year, 2018 calendar year
Vehicles
Chevrolet: 2019+ Silverado, 2021+ Tahoe, 2021+ Suburban
GMC: 2019+ Sierra, 2021+ Yukon, 2021+ Yukon XL
Cadillac: 2021+ Escalade, 2021+ Escalade ESV
Buick: none

The T1 platform is brand new and engineered from the ground up to underpin full-size pickup trucks and SUVs.

It has been rumored that GM intended to utilize the T1 platform to underpin both its midsize and full-size body-on-frame pickup trucks and SUVs. However, the effort to underpin the mid-size models was scrapped. As such, the platform is now believed to be capable of supporting full-size body-on-frame models.

T1 support a wide range of GM’s four-, six-, and eight-cylinder GM engines and transmissions.

Engines

Transmissions

Applications of the T1 platform include:

Chevrolet

GMC

Cadillac

GM is working on a version of the T1 platform for Battery Electric Vehicles (BEVs). That version of the architecture is referred to internally as the BT1 platform, short for Battery T1.

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