speed signal out of the ECM - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

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Old 10-11-2004, 12:34 AM   #1
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Default speed signal out of the ECM

I am curently adapting a 95 SSEI insterment panel into a 92 bonneville SE, and i was wondering what the nature of the output of the ECM'* speed signal is, (freq modulated, or mili voltage, or other) the reason I need to know this is bacause i want the milage on the new IP to be accurate, (ill power up the new dash and run a determinted speed of like 130 MPH untill my odometer goal is reached)......... crazy I know......any responces would be appreciated,

P.*. if anyone is parting out there SSEI bonne and wants to get rid of the compass module and adaptive light module i will be a willing buyer,

thanks again,
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