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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.

code 55?

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Old 09-06-2003, 08:16 PM
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Default code 55?
WTF is code 55 and where is it so i can change it???
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Old 09-06-2003, 09:00 PM
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What is the year and trim line of your car?
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Old 09-07-2003, 02:08 AM
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92 ssei
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Old 09-07-2003, 10:13 AM
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code 55: ECM

Time for a new computer David
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Old 09-07-2003, 10:43 AM
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Hold on!

That code means that you have had repetitive failure of the large solenoid inside the EGR valve. It may be stuck or damaged.
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Old 09-07-2003, 10:44 AM
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Oh kay....uh, then our ECM code list in Techinfo is wrong?

http://www.bonnevilleclub.com/techinfo/?article=34
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Old 09-07-2003, 10:48 AM
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Yes, 53, 54, and 55 all represent EGR problems.
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Old 09-07-2003, 10:53 AM
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OK, thanks Fuddy, we're on this. i appreciate the head up.
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