• REPLACEMENT THROTTLE BODY ASSEMBLY – regulates the proper volume of airflow into the engine which is essential to the mixture of fuel and air in the engine. If you are experiencing engine stalling, failing to start, electronic throttle warning light came on, hesitation or power surging on acceleration on your Escalade, Express 1500, 2500 3500, SSR, Suburban, Yukon XL then you may have a problem with your vehicle’s throttle body.
• COMPATIBLE REPLACEMENT FOR CHEVROLET, GMC, CADILLAC, BUICK & HUMMER VEHICLES – 2004 Rainier | 2003 – 2006 Escalade, ESV, EXT | 2003 – 2006 Avalanche | 2007 Express 1500 | 2003 – 2006 Silverado 1500 V8 | 2007 Silverado 1500 Classic | 2003 – 2006 Suburban 1500 | 2003 – 2007 Savana 2500 | 2003 – 2004 Sierra 2500 | 2003 – 2006 Sierra 3500 | 2003 – 2006 Yukon | 2003 – 2007 H2 | & more. See below for the full vehicle list.
• REPLACES PART# 12679525, 12570800, 977-307, 977307 commonly found on popular Suburban 1500, 2500, Tahoe, Trailblazer, Savana, , SSR, Express, Tahoe models including year models 03, 04, 05, 06, 07. The throttle body on your Envoy XL, Trailblazer or other model can easily be located near the engine inside the engine bay connected to the air intake. This replacement throttle body from AA Ignition comes with the throttle actuator. The old throttle body commonly fails due to carbon and dirt.
• OEM FIT, QUALITY, FINISH – This throttle body assembly from AA Ignition is manufactured to the same specifications if not better as the factory throttle body. While this is not a genuine OEM part, it is a direct replacement and it will fit, work and appear exactly like the factory throttle body on your vehicle.
• LIFETIME WARRANTY – This throttle body assembly from AA Ignition comes complete with a lifetime warranty. If the throttle body ever fails on your Express 1500, 2500, 3500, Savana 2500, 3500, Sierra 3500 HD or H2 simply contact us for a replacement. Save time and money off of dealer prices by purchasing this part and replacing it yourself.

Fits the folllowing vehicles:

• 2004 Rainier 5.3L
• 2003-2006 Escalade 5.3L, 6.0L
• 2003-2006 Escalade ESV, EXT
• 2003-2006 Avalanche
• 2007 Express 1500 5.3L
• 2003-2007 Express 2500, 3500 6.0L
• 2007 Express 2500, 3500 4.8L
• 2003-2006 Silverado 1500 4.8L, 5.3L, 6.0L
• 2007 Silverado 1500 Classic
• 2003-2006 Silverado 1500 HD 6.0L
• 2007 Silverado 1500 HD Classic 6.0L
• 2003-2004 Silverado 2500
• 2003-2006 Silverado 2500 HD, 3500
• 2007 Silverado 2500 HD Classic, 3500 Clasic
• 2003-2004 SSR
• 2003-2006 Suburban 1500, 2500
• 2003-2006 Chevrole Tahoe
• 2004 Trailblazer 5.3L
• 2003-2007 W3500, W4500 Tiltmaster
• 2003-2004 Envoy XL 5.3L
• 2007 Savana 1500 5.3L
• 2003-2007 Savana 2500, 3500 6.0L
• 2007 Savana 2500, 3500 4.8L
• 2003-2005 Sierra 1500 4.8L, 5.3L, 6.0L
• 2006 Sierra 1500 4.8L, 6.0L
• 2007 Sierra 1500 Classic 4.8L, 5.3L, 6.0L
• 2003-2006 Sierra 1500 HD 6.0L
• 2007 Sierra 1500 HD Classic 6.0L
• 2003-2004 Sierra 2500
• 2003-2006 Sierra 2500 HD, 3500
• 2007 Sierra 2500 HD Classic, 3500 Classic
• 2004-2007 W3500 Forward
• 2003-2007 W4500 Forward
• 2003-2006 Yukon 4.8L, 5.3L
• 2003-2006 Yukon XL 1500, XL 2500
• 2003-2007 H2

Replaces part numbers:
12679525, 12570800, 977-307, 977307 This is a compatible replacement part manufactured by AA Ignition. This throttle body is NOT a genuine OEM part. Vehicle makes and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this throttle body fits.