GELUOXI Throttle Body Assembly V8 12679525 — Direct-Fit for GM 4.8L/5.3L/6.0L Trucks & SUVs

This replacement throttle body is designed for compatibility with many GM engines, including 4.8L, 5.3L and 6.0L V8 applications across Silverado, Suburban, Avalanche, Express, Escalade, Hummer H2 and select SUVs. It’s supplied to match OEM electrical and mounting points so installation is straightforward for technicians and experienced DIYers. Confirm the OEM numbers and vehicle fitment before purchase to ensure proper function and avoid diagnostic codes.

What vehicles and engine sizes will this GELUOXI throttle body fit?

The GELUOXI 12679525 throttle body is made to replace several OEM part numbers and fit many GM V8 models from the early-to-mid 2000s. Fitment covers half-ton and three-quarter-ton trucks, full-size SUVs, and select vans that use the 4.8L, 5.3L or 6.0L V8 engines.

• Commonly compatible models: 2003–06 Chevy Avalanche 1500, 2003–06 Silverado 1500, 2003–06 Suburban 2500.
• Vans and large vehicles: 2007 Express 2500/3500 (6.0L), 2003–07 Hummer H2, 2003–06 Cadillac Escalade ESV/EXT.
• Also fits: 2003–04 Isuzu Ascender, 2004 Buick Rainier, 2003–04 Trailblazer EXT and other GM derivatives with listed OEM numbers.

How do I confirm this is the correct replacement part?

Before ordering, compare your vehicle’s OEM throttle body part number with the replacement reference numbers to make sure the unit will mate with existing connectors, throttle cable or drive-by-wire harness, and mounting points. A visual comparison and VIN lookup are the most reliable methods.

• Match OEM numbers: 12570800, 12679525, 217-2293, 977-307, etc.
• Verify engine displacement and model year against the compatibility list.
• Inspect mounting holes and electrical connector shape against photos or your old part.

What should I do during installation to avoid error codes or faults?

Proper installation includes checking related components and using the vehicle ECU to recalibrate the new throttle body if required. Failing to perform necessary adaptations may trigger error codes or drivability issues, so follow the vehicle manufacturer’s adaptation procedure or have the ECU matched by a qualified tech.

• Inspect intake, gaskets and sensors prior to mounting the new unit.
• Use OEM-specified torque values for fasteners and reconnect electrical plugs securely.
• Perform throttle body relearn or ECU matching after installation to clear codes.

What does the product package include and how does warranty/support work?

The listing shows the actual product images and includes the assembled throttle body unit ready for installation. If the throttle body arrives damaged or is incompatible, contact the seller for support; they offer assistance to resolve fitment or product issues.

• Package contains one assembled GELUOXI throttle body ready for fitment.
• Photos in the listing display the exact part supplied — confirm visually.
• Seller support is available for fitment questions or return/exchange requests.

Who this is for: This GELUOXI 12679525 throttle body assembly is intended for owners, mechanics and restorers of early-mid 2000s GM V8 trucks, vans and SUVs who need a direct-fit replacement to restore throttle control and to avoid prolonged downtime. It’s ideal for anyone comfortable verifying OEM numbers and performing ECU adaptations or working with a professional installer to ensure proper calibration and trouble-free operation.