Unless you're building or racing General Motors' vehicles on a track, you might not think about your transmission too much – but if you're replacing your GM transmission or its components, it's time to shift your thinking. Only GM Genuine Parts OE transmissions and transfer cases are tested to meet GM OE specifications to fit your exact Chevrolet, Buick, GMC or Cadillac vehicle. GM transmissions and components, new or remanufactured by GM Genuine Parts, offer world-class performance and reliability that we only continue to innovate on.


From transmission cooler lines and fittings to gaskets and valve bodies, with GM OE Transmission Components and ACDelco Gold Transmission Components, you can rest assured that your vehicle is receiving high-quality parts engineered for long-lasting performance, durability and dependability. GM OE and Professional Transmission Components are engineered for virtually every model of GM car, light-duty truck and sport utility vehicle.


Stay with the parts your General Motors vehicle came with for known quality and trust with GM Genuine Parts and ACDelco. Get peace of mind that the fit, form and function are up to the high standards and specifications of General Motors.


Minimize lengthy installs and labor costs with plug-n-play parts for GM vehicles. GM supplies the proper fit and offers technicians Techline Connect subscription-based software program for accurate calibration during service replacements. We've also streamlined recycling parts with our "no hassle" Core Return Policy for transmission assemblies.

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New or remanufactured GM transmission assemblies are engineered and built specifically for Chevrolet, Buick, GMC and Cadillac vehicles. Remanufactured parts are parts rebuilt to the exact specifications of the original manufacturer. Using a combination of reconditioned and new parts, remanufactured transmissions from GM Genuine Parts are built, tested and validated to meet GM-approved service part requirements and OE manufacturing standards.


Shift into gear with the right parts from GM Genuine Parts and ACDelco. We offer a full range of shift levers and controls for automatic and manual transmissions that offer a precise fit for GM vehicles and the performance you’ve come to expect from GM.


Your GM vehicle’s transmission case helps hold your transmission secure and keeps it shielded. GM Genuine Parts transmission cases are designed, engineered, tested and backed by GM.


To keep your transmission performing seamlessly, it’s important to use the right gaskets and seals to match your GM vehicle’s original transmission components. GM Genuine Parts transmission gaskets and seals are designed, engineered, tested and backed by GM to provide quality fit and finish for GM transmissions.


GM Genuine Parts and ACDelco offer a wide range of transmission electrical components parts to help keep your vehicle on the road. Built to exact specifications and extensively tested, GM Genuine Parts transmission components are designed, engineered, tested and backed by GM for a perfect fit for your GM vehicle.


GM Genuine Parts and ACDelco offer a full line of transmission parts and components for Chevrolet, Buick, GMC and Cadillac vehicles.


Complementing your Chevrolet Performance crate engine with a factory-engineered new or remanufactured performance transmission is a cinch with our comprehensive lineup of automatic transmissions, torque converters and installation kits. Each transmission kit is engineered with factory-matched torque capacity ratings, helping ensure the transmission you purchase will stand up to the power of your engine.


Most GM Original Equipment by GM Genuine Parts and ACDelco come backed by one of GM’s warranties for streamlined coverage.

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