Clearing SES Light

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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gk35
SLE Member
SLE Member
Posts: 27
Joined: Sat Nov 14, 2015 4:47 pm
Year and Trim: 1994 Bonneville SE

Clearing SES Light

Post by gk35 »

1994 Bonneville. This is the OBD Transition year. Vehicle has OBDII connector but OBDI coding. SES light is on. TunerPro RT shows error codes but cannot clear SES. I tried disconnecting battery for several minutes and did not clear SES light.

Anyone else have any ideas on how to turn off the SES light after making repairs?
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Benvw99
SSE Member
SSE Member
Posts: 116
Joined: Thu Nov 06, 2014 7:17 pm
Year and Trim: 2005 Bonneville SLE
Location: Selby, SD

Re: Clearing SES Light

Post by Benvw99 »

Try leaving the battery disconnected for a few hours, or over night. A few minutes like you said might not be enough to do it.
2005 Pontiac Bonneville SLE in Crimson Tintcoat.
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Previous or other current Pontiac vehicles...
2003 Grand Am SE1 3.4L - Black
2008 G6 GT Coupe 3.5L - Silver
2002 Grand Prix SE 3.1L - Dark Tropic Teal
1998 Grand Prix SE 3.1L - White
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cjski
SLE Member
SLE Member
Posts: 29
Joined: Sat Apr 27, 2013 8:55 pm
Year and Trim: 1995 se
Location: Tucson, AZ

Re: Clearing SES Light

Post by cjski »

What are the codes that are stored or recurring ? It could be a blown fuse on quad circuit check all fuses near pcm and by drivers side
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