Question about 1991 Cadillac DeVille
Better check the code with code scanner. Free from shcucks or auto zone.
Posted on Apr 22, 2013
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Posted on Jan 02, 2017
E26 - Shorted Throttle Switch Circuit
E27 - Open circuit in throttle switch
On these 2 codes replace the TPS and clear codes (throttle position sensor).
E52 PCM/ECM Memory Reset
Have u cleared the memory? don't worry about this code.
Posted on Apr 08, 2009
P0440 - Evaporative Emission (EVAP) System leak, poss gas cap not tight or left off
Posted on Mar 26, 2010
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IF when you purchased your car you didn't set your own personal code you will have to take this to your local GM dealer and they can pull the code that is set at the factory and unlock your radio.THe proceedure for setting your own code then unlocking radio is in your owners manual.The dealership I worked for did this for free.
Posted on Aug 31, 2009
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