Galt Mechanics Diagnostics Port (GMDP)
(note, this post is purely company lore)
Galt Mechanics Diagnostics Port, or GMDP for short, is a monitoring and diagnostics port Galt had designed after finding inspiration in the usefulness of GM’s new ALDL connector outside of the factory. The port itself was first used in 1981 in the 2nd generation Tetrad, and was implemented across all Galt Models by 1983, with a few other manufacturers licensing the tech. The port itself also allows for bidirectional communication over a proprietary parallel interface with speeds of around 2Kbps in the first generation systems. The system has a number of DTC’s for various major issues that throw the check engine light, with the system being adapted in the early 90’s to meet new California Standards, to include issues with the emissions system. The system also can send out precise live data from any equipped sensors (MAF, Engine speed, Turbo Boost, etc) to assist in diagnosis of issues that would not throw a CEL. Galt service centers started to get computers almost immediately, with a consumer level system being made for IBM PC compatibles in '83 consisting of a converter cable and software. GMDP was phased out in the US when the OBDII standard rolled out in '96, and in Europe when eOBD became their standard in 2000. However in nations with no OBD standard, Galt still continues to install the latest gen of GMDP.
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