Description: All models. 4.8l, 5.3l, 6.0l. All models. 8.1l. Eng. code j. Yukon XL, Suburban. 6.2l. Yukon XL, Suburban. 6.0l. Tahoe, Yukon, Escalade. Hummer H2. Avalanche. 6.0l. Escalade EXT. Silverado, sierra hybrid. Helps provide a seal to prevent fuel leaks Helps seal combustion chamber from the elements This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Description: Atomizes fuel into the engine's intake manifold or cylinders, as part of the fuel and engine management system Allows for a quick throttle response Assists in cold engine starts This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors