Cruise Control Not Working

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Cadillac Allante Forum Discussion, Cruise Control Not Working in Past Cadillac Vehicle Discussion; The cruise control on my '93 does not work. Replaced the turn signal module and it has power but still ...
  1. #1
    bunsowh is offline Cadillac Owners Member
    Join Date
    Jan 2006
    Napa, CA

    UnhappyCruise Control Not Working

    The cruise control on my '93 does not work. Replaced the turn signal module and it has power but still does not work. Mechanic says that after market alarm system may be involved in theproblem (I didn't even know I had one) and most recently he says I need a new ECM for $300 but hte first one he tried did not fix the problem. Any suggestions? Thanks,

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  3. #2
    carnut is offline Cadillac Owners Master
    Automobile(s): 1999 BMW 740 Il. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003

    Re: Cruise Control Not Working

    Be aware that some fault codes that might be present will prevent the cruise control from engaging. Go into diagnostics and write down all codes if there are any. This car has the ability to activate the cruise control thru diagnostics, also it will verify cruise switch operation, brake light switch operation and resume operation simply by pushing the correct buttons on the climate control display. A factory service manual is most important regarding things such as this, keeps an unfamiliar mechanic from throwing parts at it like ECM's. If any fault codes relate to an emmision issue, cruise will be disabled till the fault is corrected. GM felt that some drivers would ignore faults but would not stand for having no cruise control on their Cadillac! Before further money is spent, invest in a factory service manual. If you are not mechanically inclined, make sure the mechanic has the service manual in hand before diagnostics are attempted.

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