This label includes other information along with the list of RPO's, including the V.I.N., wheelbase, paint codes, and vehicle model number. The Service Parts Identification (SPID) label found in my 2007 Chevy Silverado truck. It was so successful that many folks use the term 'LS1' or 'LS motor' to refer to any Gen III or later Gen IV V8, despite the fact that the LS1 hasn't been produced since 2005 and the RPO for many of the third and fourth generation motors does not contain the letters 'LS'. As you will shortly read, GM designed the first third-generation (or Gen III) V8 - the LS1 - to power the 1997 Chevy Corvette. In a similar fashion, 'LS1', which is the RPO code for the very first GM all-aluminum, third generation, V8 small block engine, has become so popular a term that is has come to be commonly used (if somewhat inaccurately) to describe any of the third, and even fourth generation GM V8s. This code has become so well known, and so often used, that it has actually come to be used to describe the car itself, as in, 'Yea, I drive a Z28'. Z28 is the GM code, or RPO, that designates an optional performance package available on Chevy Camaros. One of the most famous RPO's of all time is 'Z28'. On late-model GM cars and trucks this label is found inside the glove box. They are listed on a label or sticker called the Service Parts Identification (SPID) label. GM uses a 3-digit code, called an RPO (an acronym for Regular Production Option), to identify the options with which a specific vehicle is built. It's a little ironic that I, as uptight as I am about the accurate naming of things, should actually use a misnomer in the title of this article.

Gen IV advanced technologies - AFM and VVT

Common Features of the Gen III / IV Design / Architecture

Corvette ls1 cam bearings