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: All models. 4.8l, 5.3l, 6.0l. 5.7l. GTO. Helps provide smooth engine idle This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Description: All models. 6.0l. Express, savana. 6.0l. Express, savana. 4.8l. 5.3l. Hummer H2. SSR. This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle 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

Description: Incl.O-Rings. Auto trans. 8.1l. All models. 7.4l. Express, savana. 7.4l. Express, savana. 8.1l. 5.3l. 5.7l. SSR. Incl.Retainer & Seals. Hummer H2. Helps provide constant fuel pressure to the injectors Assists in cold engine starts Helps maintain stable engine idle