ECM

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 Dictates the operation of your vehicle's vital systems, which is critical to the performance of your vehicle

Cap

All models. 5.0l, 5.7l, 7.4l. Express, savana. 5.0l, 5.7l. Express, savana. 7.4l. 1/2, 3/4 & 1 ton, 1996 new style, 5.0, 5.7, 7.4L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

1996-00. 4.3, 5.0, 5.7, 7.4L, 4.3, 5.0, 5.7, 7.4L. Astro, Safari. 4.3l. All models. 5.7l. Without zr1. 6 cylinder. High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed