The first of which, was named the E40 controller. GM started to introduce ECM’s in place of PCM’s in the late model, 6L LS2 HSV VZ Commodores. Unlike a PCM, the ECM cannot control the automatic transmissions which they are associated with. The Green connector IS NOT compatible with a RED PCM receptacle and vice versa.ĭirty South Offers Several services for the P01 P59 PCM’s including REPROGRAMMING, NEW CONNECTORS & MOUNTING BRACKETSĪn Engine control module is the brains of the Engine and ONLY the Engine. The two variants of PCM look identical from the outside with the only point of visual difference being the keyways on the connectors. These PCM’s also control the transmission of the vehicle, they control certain aspects (Like Reverse lockout solenoid) of the T56 Manual Transmissions and all the functionality of the 4L60e and 4L80e automatic transmissions. With some rewiring and reprogramming, these computers CAN be changed to work with cable throttles. Green/Blue P59 PCM’s are found on the latter, Electronic Throttle VZ 5.7L LS1 Engines. Red/Blue P01 PCM’s are found on the earlier, cable driven variants of the LS1/LS6 and CANNOT be used with a FBW throttle body. In Australia, there are two main types named P01 and P59, or more commonly referred to as Red/Blue or Green/Blue Variants. The PCM is found paired with 1999-2005 LS1/LS6 based vehicles. The “AND” is an important detail, as you will find later. Let’s start with the acronyms themselves.Ī Powertrain Control Module is the brains of the Engine AND Transmission. Please note, this article is for Australian delivered LS swap vehicles only and may not apply internationally. Getting your head around GM’s acronyms for its control modules and software can be a task in itself, this article aims to explain these terms and where they are used, especially in the world of LS Swaps and LS Conversion Harnesses.
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