Engine Control Module, Remanufactured - GM (19299227)

All models. 8.1l. All models. 4.3l. S-series. 4.3l. Astro, Safari. 4.3l. 6 cylinder. Code Yfky Yfpz Yfyy. 5.3L. 5.7L. GTO. 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