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1986 coupe deville
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22 Posts
Discussion Starter #1
my 4.1 v8 deville comes up with fault code pcm memory reset ... what and how ??? :ill:
 

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1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
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6,738 Posts
Usually means a history code. In the past the battery was disconnected causing no communication. Erase the code and check for codes in a week.
 

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'87 SDV
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1,296 Posts
Key on, press OFF and WARMER to cycle on diagnostics. Wait for display to read .7.0

Press OFF and HI to erase ECM codes: Display reads E.0.0

Press OFF and LO to erase BCM codes: Display reads F.0.0

Press AUTO to exit diagnostic mode
 
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