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 09-01-2007, 10:05 PM   #1
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Default Code 55

i just pulled a code 55 (exhaust gas regulator fault EGR solenoid #3) Is there a way i can fix these of do i need a new EGR or can i just clean it? and is solenoid 3 still in the EGR it self?
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Old 09-02-2007, 01:00 AM   #2
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According to my '92 FSM, code 55 is set when the large solenoid test fails 3 out of 5 times. Sounds like you need to clean the EGR. I know a few others on here got similar codes, and cleaning did the trick for some.
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Old 09-02-2007, 01:45 AM   #3
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now is there any special way to clean it kind like kind of gasket i might need to replace, im pretty sure i dont need to watch out for any thing but just want to double check.

thanks keith
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