12678312 Genuine GM Throttle Body Assembly With Sensor
Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More
Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More
The 12678312 throttle body assembly controls the intake opening to manage engine airflow in compatible Cadillac, Chevrolet, and GMC applications. It combines airflow regulation with throttle position sensing to maintain communication with the electronic engine controls throughout normal operation.
| Year | Vehicle | Engine | Trims |
|---|---|---|---|
| 2021 | Cadillac Escalade | 6.2L V8 - Gas | Luxury, Premium Luxury, Premium Luxury Platinum, Sport, Sport Platinum |
| 2021 | Cadillac Escalade ESV | 6.2L V8 - Gas | Luxury, Premium Luxury, Premium Luxury Platinum, Sport, Sport Platinum |
| 2021 | Chevrolet Silverado 2500 HD | 6.6L V8 - Flex / 6.6L V8 - Gas | Custom, High Country, LT, LTZ, WT |
| 2021 | Chevrolet Silverado 3500 HD | 6.6L V8 - Flex / 6.6L V8 - Gas | High Country, LT, LTZ, WT |
| 2021 | Chevrolet Suburban | 6.2L V8 - Gas | High Country |
| 2021 | Chevrolet Tahoe | 6.2L V8 - Gas | High Country |
| 2021 | GMC Sierra 2500 HD | 6.6L V8 - Flex / 6.6L V8 - Gas | AT4, Base, Denali, SLE, SLT |
| 2021 | GMC Sierra 3500 HD | 6.6L V8 - Flex / 6.6L V8 - Gas | AT4, Base, Denali, SLE, SLT |
| 2021 | GMC Yukon | 6.2L V8 - Gas | Denali |
| 2021 | GMC Yukon XL | 6.2L V8 - Gas | Denali |
| 2020 | Cadillac Escalade | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium Luxury |
| 2020 | Chevrolet Silverado 2500 HD | 6.6L V8 - Gas | Custom, High Country, LT, LTZ, WT |
| 2020 | Chevrolet Silverado 3500 HD | 6.6L V8 - Gas | High Country, LT, LTZ, WT |
| 2020 | GMC Sierra 2500 HD | 6.6L V8 - Gas | AT4, Base, Denali, SLE, SLT |
| 2020 | GMC Sierra 3500 HD | 6.6L V8 - Gas | AT4, Base, Denali, SLE, SLT |
| 2019 | Cadillac Escalade ESV | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium Luxury |
| 2019 | Chevrolet Silverado 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2019 | Chevrolet Silverado 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2019 | Chevrolet Suburban 3500 HD | 6.0L V8 - Flex | LS, LT |
| 2019 | GMC Sierra 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2019 | GMC Sierra 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2018 | Cadillac Escalade ESV | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium Luxury |
| 2018 | Chevrolet Silverado 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2018 | Chevrolet Silverado 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2018 | Chevrolet Suburban 3500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | LS, LT |
| 2018 | GMC Sierra 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2018 | GMC Sierra 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2017 | Cadillac Escalade ESV | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium Luxury |
| 2017 | Chevrolet LCF 3500 | 6.0L V8 - Flex / 6.0L V8 - Gas | Base |
| 2017 | Chevrolet Silverado 2500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2017 | Chevrolet Silverado 3500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2017 | Chevrolet Suburban 3500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | LS, LT |
| 2017 | GMC Sierra 2500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2017 | GMC Sierra 3500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2016 | Cadillac Escalade ESV | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium |
| 2016 | Chevrolet LCF 3500 | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base |
| 2016 | Chevrolet Silverado 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2016 | Chevrolet Silverado 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | High Country, LT, LTZ, WT |
| 2016 | Chevrolet Suburban 3500 HD | 6.0L V8 - Flex / 6.0L V8 - Gas | LS, LT |
| 2016 | GMC Sierra 2500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2016 | GMC Sierra 3500 HD | 6.0L V8 - CNG / 6.0L V8 - Flex / 6.0L V8 - Gas | Base, Denali, SLE, SLT |
| 2015 | Cadillac Escalade | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium |
| 2015 | Cadillac Escalade ESV | 6.2L V8 - Flex / 6.2L V8 - Gas | Base, Luxury, Platinum, Premium |
| 2015 | GMC Yukon | 6.2L V8 - Flex / 6.2L V8 - Gas | Denali |
ย
| Condition | New |
| Part Number | 12678312 |
| Brand | General Motors |
| Part Type | Throttle Body Assembly With Sensor |
| Years | 2015โ2021 |
| Vehicle | Cadillac / Chevrolet / GMC |
| Fitment Type | Direct Replacement |
The 12678312 throttle body assembly controls the engine intake opening and supports electronic monitoring of throttle position for compatible General Motors applications:
The 12678312 is designed for compatible Cadillac, Chevrolet, and GMC vehicles equipped with the specified electronic throttle control system. Inspect the intake mating surface, throttle body connector, sealing area, and surrounding intake components before installation.
Always verify part number, engine configuration, throttle control system, and vehicle compatibility before installation.