1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

DTC P1257 on an L36???

Old Mar 26, 2007 | 07:30 AM
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What do you mean, it doesn't have this problem when you plug it in overnight?
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Old Mar 26, 2007 | 08:11 AM
  #13  
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Originally Posted by BillBoost37
What do you mean, it doesn't have this problem when you plug it in overnight?
When I use the engine block heater it seems to start up right away and stay running. It hasn't been as bad the last few days since it'* been at least 45*F overnight.
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