code 55? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

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Old 09-06-2003, 09:16 PM   #1
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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, 10:00 PM   #2
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What is the year and trim line of your car?
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Old 09-07-2003, 03:08 AM   #3
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92 ssei
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Old 09-07-2003, 11:13 AM   #4
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code 55: ECM

Time for a new computer David
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Old 09-07-2003, 11:43 AM   #5
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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, 11:44 AM   #6
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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, 11:48 AM   #7
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Yes, 53, 54, and 55 all represent EGR problems.
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Old 09-07-2003, 11:53 AM   #8
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OK, thanks Fuddy, we're on this. i appreciate the head up.
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