GELUOXI Throttle Body Assembly for GM V8 12679525 — Direct OEM-Style Fit, Electronic Throttle Control

GELUOXI's throttle body assembly (part 12679525) is a direct-replacement electronic throttle body designed to restore proper air control for V8 GM trucks and SUVs.

This high-quality replacement unit fits a wide range of GM V8 vehicles — including Chevy Avalanche, Silverado, Suburban, Express vans, Cadillac Escalade variants, Hummer H2, and several others — and is intended to be used where the original throttle body has failed, stuck, or produced fault codes. The assembly is sold under multiple cross-reference numbers (12570800, 12679525, 217-2293, 977-307) so confirm your OEM part number and vehicle application before ordering. During installation you should verify related components and use the vehicle’s ECU to relearn or match the new part to avoid electronic fault codes.

How do I verify this throttle body fits my vehicle?

Match the OEM part number printed on your original throttle body to the replacement’s cross-reference numbers. Also check the vehicle year, model, engine displacement, and connector pin configuration to ensure compatibility.

• Cross-reference numbers: 12570800, 12679525, 217-2293, 977-307
• Common compatible models listed: 2003–06 Avalanche 1500, 2003–06 Silverado 1500, 2003–06 Suburban 2500
• Other fits: 2007 Express 2500/3500 V8 6.0L; 2003–07 Hummer H2; 2003–06 Escalade ESV/EXT
• Confirm connector and throttle body bolt pattern before purchase

What should I do during installation to prevent codes or faults?

Follow vehicle-specific procedures for throttle body replacement and use the engine control unit to match or relearn the new unit. Inspect surrounding components — sensors, hoses, and wiring — and replace or repair any damaged parts to prevent recurring issues.

• Ensure TPS and idle control-related wiring are intact and clean
• Clear stored codes and run the ECU relearn procedure per vehicle manual
• Inspect intake boot, vacuum lines, and MAF sensor for leaks or contamination
• Replace gaskets and torque bolts to OEM specifications

What performance and reliability can I expect from this replacement part?

This throttle body is built as a functional OEM-style replacement to restore reliable electronic throttle control and drivability. It provides the same mounting points and electrical interface as the original to maintain proper throttle response and idle behavior when correctly installed and calibrated.

• OEM-style fit for direct replacement and bolt-pattern compatibility
• Electronic throttle control compatible with factory ECU systems
• Ships with product images that match the actual unit for accurate inspection
• Backed by seller support for installation questions and compatibility checks

Which vehicles and engines are covered by this part number?

The assembly supports a broad family of GM V8 models from the early-to-mid 2000s. Always verify exact engine displacement and model year to ensure a safe fit.

• Chevy Avalanche 1500 (2003–2006) and Silverado 1500 (2003–2006) V8 options
• Chevy Suburban 2500 (2003–2006) and Express 2500/3500 (2007) with 6.0L V8
• Cadillac Escalade ESV/EXT, Hummer H2, Trailblazer EXT, Buick Rainier, Isuzu Ascender
• See the full vehicle list and confirm OEM part number before ordering

Who is this for? This GELUOXI throttle body assembly is intended for mechanics, fleet technicians, and DIY vehicle owners who need a dependable, OEM-style replacement for malfunctioning throttle control on compatible GM V8 trucks and SUVs. If you need to resolve throttle-related fault codes, restore smooth idle and throttle response, or replace a physically damaged unit, this assembly offers a practical, cross-referenced option — just confirm vehicle compatibility and follow ECU relearn procedures after fitting.