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What Is a Throttle Body?
The throttle body of your vehicle is basically a butterfly valve. It is usually located anywhere between the intake manifold and the air intake filter. The core function of the throttle body is to regulate and control the amount of air that is allowed to enter the engine.
This is regulated by the information that determines how much combustion is required inside the engine and how much air will be required for that combustion.The input data is sensed from the pressure that the driver applies on the throttle of the vehicle. The stronger pressure on the gas pedal, the more air that enters the engine system.
Where Is the Throttle Body Located?
Typically, in most vehicles, the throttle body can be found in between the intake manifold and the air filter or air cleaner of the engine system.
The location of the throttle body can be a little different for different vehicles. However, according to the purpose of the throttle body, it should be located anywhere between the air filter and the intake manifold.
Compatibility:For Chevy
- Silverado 1500 4.8L V8 2003 | 5.3L V8 2003 | 5.3L V8 ELECTRIC/GAS 2004 | 6.0L V8 2003
- Silverado 1500 CLASSIC 4.8L V8 2007 | 5.3L V8 2007 | 5.3L V8 ELECTRIC/GAS 2007 | 6.0L V8 2007
- Silverado 2500 5.3L V8 2003 | 6.0L V8 2003
- Silverado 2500 CLASSIC 6.0L V8 2007
- Silverado 3500 6.0L V8 2003
- Silverado 3500 CLASSIC 6.0L V8 2007
For Chevy
- Express 1500 5.3L V8 2007
- Express 2500 4.8L V8 2007 | 6.0L V8 2004
- Express 3500 4.8L V8 2007 | 6.0L V8 2004
- Suburban 1500 5.3L V8 2003 | 6.0L V8 2006
- Suburban 2500 6.0L V8 2003
For Chevy
- SSR 5.3L V8 2003
- TrailBlazer 5.3L V8 2003
- Tahoe 4.8L V8 2003 | 5.3L V8 2003
- Avalanche 1500 5.3L V8 2003
Compatibility:
For 2004 Buiick Rainier V8 5.3L
For Cadillac
- 2003-06 Cadillac Escalade
- 2003-06 Cadillac Escalade ESV
- 2003-06 Cadillac Escalade EXT
For Hummer, Isuzu
- 2003-07 Hummer H2
- 2003-04 Isuzu Ascender V8 5.3L
For GMC
- Sierra 1500 4.8L V8 2003 | 5.3L V8 2003 | 5.3L V8 ELECTRIC/GAS 2005 | 6.0L V8 2003
- Sierra 1500 CLASSIC 4.8L V8 2007 | 5.3L V8 2007 | 5.3L V8 ELECTRIC/GAS 2007 | 6.0L V8 2007
- Sierra 2500 6.0L V8 2003
- Sierra 2500 CLASSIC 6.0L V8 2007
- Sierra 3500 6.0L V8 2003
- Sierra 3500 CLASSIC 6.0L V8 2007
For GMC
- 2003 2004 GMC Envoy XL V8 5.3L
- 2004 Envoy XUV V8 5.3L
- 2007 Savana 1500 Van V8 5.3L
- 2007 Savana 2500 Van V8 4.8L
- 2007 Savana 2500 Van V8 6.0L
- 2004-06 Savana 2500 Van V8 6.0L RPO Code KUP (Electronic Variable Speed)
- 2007 Savana 3500 Van V8 4.8L 6.0L
- 2004-06 Savana 3500 Van V8 6.0L RPO Code KUP (Electronic Variable Speed)
- Yukon 4.8L V8 2003 | 5.3L V8 2003 | 6.0L V8 2003
- Yukon XL 1500 5.3L V8 2003 | 6.0L V8 2003
- Yukon XL 2500 6.0L V8 2003 2004 2005 2006
Replacement Part Number:
- 12570800
- 12679525
- 217-2293
- 977-307
- Please confirm the part number and vehicle models before order.
Signs of a Bad Throttle Body
A bad throttle body valve can cause a lot of different symptoms in your vehicle. Here is a list of the most common ones:
Signs of a Bad Throttle Body
Signs of a Bad Throttle Body
Signs of a Bad Throttle Body
Signs of a Bad Throttle Body
Adiuo
2025-09-05 13:41:55
worked great and fixed the issue
David Z.
2025-07-30 14:46:58
Finally fixed our reduced engine power issue! Fairly easy install.UPDATE: FAILED AFTER 2 WKS. LEFT US STRANDED
J. Taylor
2025-06-18 16:32:31
I swapped this in for the original part to correct a low power mode issue p1518 that ended up being a broken wire. I kept this part thinking it might improve performance since the original part was 20 years old. Last month I had a new error code p1516. I still had the original part in a box so I swapped it back and the error code went away. If the seller replaces it under warranty I will gladly raise my review score.Update - seller was unwilling to provide any warranty. If a failure rate of less than 1 year is acceptable on a part that can cripple your vehicle and leave you stranded I would recommend you look elsewhere.
toledo shopper
2025-06-11 18:49:19
If your GM vehicle is going into limp mode, then this might fix it. Autozone scan said i needed this replaced when it gave the throttle body code for check engine light. Replaced in about an hour and everything is normal again. I hated “limp modeâ€. Lol
Brian Reyes
2025-05-26 10:43:33
Good value for the money. It has been installed for 4 days and hasn't had an issue nor engine code. Will update if anything comes up. Doesn't come with O-ring.
K. Pacheco
2025-04-07 16:45:49
i know its early, just 2 days after, but item worked perfect for me. Once my ecm calibrated for the new throttle body everything was great!!! I ended up buying the warrantee on it just in case it goes bad on me in the next 3 years. Cheap insurance. I am pleased, saved at least $300 by doing it myself in parts savings and shop labor.
Rodney Drake
2025-02-22 18:12:30
Thanks for the fast delivery.. works great so far... thx
Lonnie Taylor IV
2025-02-18 09:38:18
Installed on the truck in August and after a month it has went bad. Thought maybe it was my pedal position sensor because this part was brand new. Turns out I just got a bad part.
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