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Description
ACDelco 12678312 4.8L 5.3L 6.0L 6.2L Fuel Injection Throttle BodyCondition: REBUILDABLE CORE USED This GM 12678312 Fuel Injection Throttle Body fits various engine sizes including 4. 8L, 5. 3L, 6. 0L, and 6. 2L. Designed to control the amount of air entering the engine, this part is essential for optimal engine performance. It is compatible with a range of vehicles such as the Chevrolet Silverado, Chevrolet Corvette, Chevrolet Avalanche, and Chevrolet Suburban. Contributing to the vehicle's fuel efficiency and
Condition: REBUILDABLE CORE/USEDThis GM 12678312 Fuel Injection Throttle Body fits various engine sizes including 4.8L, 5.3L, 6.0L, and 6.2L. Designed to control the amount of air entering the engine, this part is essential for optimal engine performance. It is compatible with a range of vehicles such as the Chevrolet Silverado, Chevrolet Corvette, Chevrolet Avalanche, and Chevrolet Suburban. Contributing to the vehicle's fuel efficiency and engine power, this throttle body is designed for durability and precision.
Fitment and application information provided on a best-effort basis. Customer is ultimately responsible for determining fitment.
| Interchange Number: 337-10048 Notes: GM 12678312; Ident: 12678312 | |||
|---|---|---|---|
| Model Description | Year Range | Engine | Notes |
| ESCALADE | 2018-2019 | throttle valve assembly | |
| ESCALADE ID 12678312 | 2021 | 6.2L | ID 12678312 |
| ESCALADE ESV | 2018-2019 | throttle valve assembly | |
| ESCALADE ESV | 2021 | 6.2L | throttle valve assembly; ID 12678312 |
| SIERRA 1500 PICKUP | 2019 | 6.2L | new style (mirrors mount on door skin); ID 12678312 |
| SIERRA 1500 PICKUP ID 12678312 | 2020-2021 | 6.2L | ID 12678312 |
| SIERRA 2500 PICKUP | 2020 | diesel | |
| SIERRA 2500 PICKUP | 2021 | throttle valve assembly; diesel | |
| SIERRA 3500 PICKUP | 2020-2021 | throttle valve assembly; diesel | |
| SIERRA DENALI 1500 | 2019-2021 | 6.2L | throttle valve assembly; ID 12678312 |
| SIERRA DENALI 2500 | 2020 | diesel | |
| SIERRA DENALI 2500 | 2021 | throttle valve assembly; diesel | |
| SIERRA DENALI 3500 | 2020-2021 | throttle valve assembly; diesel | |
| SILVERADO 1500 PICKUP | 2019 | 6.2L | new style (mirrors mount on door skin); ID 12678312 |
| SILVERADO 1500 PICKUP ID 12678312 | 2020-2021 | 6.2L | ID 12678312 |
| SILVERADO 2500 PICKUP | 2020 | 6.6L | throttle valve assembly; diesel |
| SILVERADO 3500 PICKUP | 2020 | 6.6L | throttle valve assembly; diesel |
| SUBURBAN 1500 ID 12678312 | 2021 | 6.2L | ID 12678312 |
| TAHOE ID 12678312 | 2021-2022 | 6.2L | ID 12678312 |
| YUKON ID 12678312 | 2021 | 6.2L | ID 12678312 |
| YUKON XL 1500 ID 12678312 | 2021 | 6.2L | ID 12678312 |
Part Number: 12678312
Manufacturer: GM
Weight: 3.0000 lbs
Additional Details:
Genuine OEM Parts
Please research/ensure fitment of part to your specific vehicle before purchasing. Returns because of non-fitment are accepted with a re-stocking fee, however customer is responsible for return shipping.
Shipping:
If shipping outside the contiguous 48 states is required, reach out to [email protected] to confirm shipping details.
About Us:
Custard Core Supply provides the highest quality of new, new take off, used, and core parts. We provide a variety of gas and diesel parts to our customers. Based in Dallas, TX Custard Core Supply has been in business since 1998. If you do not see a product you are looking for on our page, please reach out!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 966 reviews
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Product Reviews
★★★★★ 4
Awesome product!
Ok so I was skeptical at 1st with all the mixed reviews but I finally decided to give it a try. Let me start off by saying this you will have to do some set up in the settings as all tvs are different and to get the best experience it will take some time and patience. After about 30 minutes of moving the towers around and tweaking the settings I finally got it working right. I am very satisfied with it as it makes watching movie so awesome. Some colors don't match up perfectly but as in shades of colors. I definitely recommend this to anyone that wants to take movie nights to the next level.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
Love, love, love!
The kit is easy to install and set up. The only installation note I have is of your TV is not perfectly flat on the backside you may need to get creative when attaching the rope lights. Our TV is a 55in Amazon fire TV and because the back slants a little we had to be very intentional about where we placed the clips but in the end everything worked out.
Functionally, these lights are great and the camera does a good job reading the screen, however, we do have a ceiling light directly above our TV and if it's on the camera reads the reflection of the light as a yellow color at the bottom of the screen. We tried recalibrating with the light on a few different times but it still gets picked up. Not a huge deal, if we're using the movie mode we just turn off the ceiling light and everything works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
★★★★★ 5
Govee TV Backlight 3 Lite: My Movie Nights Just Got a Whole Lot Cooler!
This Govee TV backlight kit is an absolute game-changer! I was looking for a way to enhance my TV viewing experience, and this definitely did the trick. The installation was super easy – just peel and stick the LED strips to the back of my TV, and I was good to go. The app is intuitive and gives you tons of control over the colors, brightness, and even music sync options.
What really blew me away was how much more immersive my movies and shows feel. The lights create this awesome ambient glow that extends the colors of the screen onto the wall behind the TV. It's like having my own personal home theater! Plus, it just makes the whole room look cooler.
I've also been using the music sync feature when I'm listening to tunes, and it's a total blast. The lights dance and change color to the beat of the music, creating a really fun and vibrant atmosphere.
Overall, I'm beyond impressed with the Govee TV Backlight 3 Lite. It's a fantastic product that's added a whole new dimension to my entertainment setup. If you're looking for a way to take your TV time to the next level, I highly recommend checking this out!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2025
★★★★★ 5
Awesome
Installed and use it almost daily for movie nights. Have had over a year and no issues. The AI built into the app is awesome to set the right lighting for the mood, movie or music
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Awesome worth the purchase
Awesome. Great for movies and gaming. Everything can be controlled from the app
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
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