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12678312 Genuine GM Throttle Body Assembly With Sensor

P/N: 12678312 Manufactured by: GM
Original price $175.00 - Original price $175.00
Original price
$175.00
$175.00 - $175.00
Current price $175.00
3 in Stock
Condition: New
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Description

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.

Vehicle Compatibility

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

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General Specifications

Condition New
Part Number 12678312
Brand General Motors
Part Type Throttle Body Assembly With Sensor
Years 2015–2021
Vehicle Cadillac / Chevrolet / GMC
Fitment Type Direct Replacement


Product Features

The 12678312 throttle body assembly controls the engine intake opening and supports electronic monitoring of throttle position for compatible General Motors applications:

  • Adjusts the intake air passage in response to engine control commands and changing operating demands
  • Monitors throttle position through the associated sensor function for communication with vehicle electronics
  • Supports controlled airflow during idle acceleration cruising and changing engine load conditions
  • Maintains the intended air path between the corresponding intake components and engine inlet
  • Integrates with the specified electrical connector arrangement used by the factory throttle control system
  • Mounts at the corresponding intake location using the factory attachment and sealing configuration

Application Notes

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.

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