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If you have an older model GM transmission and are using the programmable speedo set, don't forget your pulse generator. See the additional information below to see if this is needed for your application.
+ Allows modern GM engines to be mated to non-electronically controlled GM automatic transmissions.
+ Converts mechanical speed signal into a digital square wave signal, at 128K pulses per mile, for you modern GM "engine computer"/speedometer
+ 8000 pulses per mile
