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GM C1XX Vehicle Platform
C1XX is the name of a global General Motors vehicle architecture designed to underpin midsize and full-size crossovers.
Pronounced “Chi”, C1XX is the crossover variant of GM’s new midsize E2XX architecture. It succeeds GM’s Theta Premium/Theta Epsilon and Lambda platforms.
| Vehicle | Model Code | Platform Variant | Production Facility 1 | Production Facility 2 | Intro Model Year |
|---|---|---|---|---|---|
| Cadillac XT5 | C1UL | V1 – regular wheelbase, narrow track | Spring Hill, TN, USA | Jinqiao Cadillac, Shanghai, China | 2017 |
| GMC Acadia | C1UG | V1 – regular wheelbase, narrow track | Spring Hill, TN, USA | - | 2017 |
| Chevrolet Traverse | C1YC | V2 – long wheelbase, wide track | Delta Township, Michigan, USA | - | 2018 |
| Buick Enclave | C1YB | V2 – long wheelbase, wide track | Delta Township, Michigan, USA | - | 2018 |
| Chevrolet Blazer (2-row) | C1UC | V3 – regular wheelbase, wide track, short rear end | Ramos Arizpe, Mexico | - | 2019 |
| Cadillac XT6 | C1TL | V4 – regular wheelbase, wide track, long rear end | Spring Hill, TN, USA | Jinqiao Cadillac, Shanghai, China | 2020 |
| “Baby” Buick Enclave | C1UB | V4 – regular wheelbase, wide track, long rear end | - | Jinqiao Cadillac, Shanghai, China | 2021 |
| Chevrolet Blazer XL (3-row) | C1UC-S | V4 – regular wheelbase, wide track, long rear end | - | Jinqiao Cadillac, Shanghai, China | 2021 |
Features
C1XX is highly modular and capable of supporting midsize and full-size crossovers. It has been engineered to be lightweight, highly flexible, and to possess exceptional driving dynamics.
The C1XX platform has several notable elements, including:
- Front-engined, transversely-mounted powertrain layout
- A four wheel independent suspension system
- Front- and all-wheel-drive applications
- Regular and extended wheelbase configurations
- Support for two- and three-row seating
- Ample trunk/cargo space with the third-row seats up in long-wheelbase models
Specifications
| Type: | Unibody welded steel body |
| Size: | Midsize or Full-Size |
| Supported vehicle type: | Crossover/CUV |
| Layout: | Front-Engine, FWD and AWD |
| Powerplant layout: | Transverse |
| Predecessor: | Theta-Epsilon (regular wheelbase C1 models) and Lambda (long wheelbase C1 models) |
| Related: | E2XX |
| Successor: | None |
Engines
C1XX supports various GM four-cylinder Ecotec and six-cylinder GM engines.
Vehicle Applications
C1XX Regular Wheelbase
Regular wheelbase applications of the C1XX platform deliver crossover utility vehicles sized as midsize or midsize-plus models, with either two or three rows of seating, depending on configuration. Applications include:
- First-generation 2017 Cadillac XT5
- Second-generation 2017 GMC Acadia
- Fifth-generation 2019 Chevrolet Blazer
- First-generation 2020 Cadillac XT6
- 2020 Chevrolet Blazer XL / three-row Blazer (China/Southeast Asia)
- “Baby” Buick Enclave (China only)
C1XX Long Wheelbase
Long wheelbase applications of the C1XX platform deliver crossover utility vehicles in the full size vehicle class, with three rows of seating. Current, expected, and upcoming applications include:
- Second-generation 2018 Chevrolet Traverse
- Second-generation 2018 Buick Enclave
