Interesting electrical info... - 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 10-11-2004, 12:07 AM   #1
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Default Interesting electrical info...

New to the forum... Have owned '95 SSEi for some time now, also had a '96 Park Ave. Lessons learned from both cars that may help others.

1. Positive "stack-cable" for electrical system and starting system is very sensitive to corrosion. Buick was freaking out, looked everywhere for cause, and finally noticed terrible corrosion between each cable and + terminal. Problem went away with new cables.
2. Bad plug wires (as I'm sure many of you know) will cause premature death of coil pack. Replace them if they're even 3 yrs old.
3. True story. While troubleshooting Buick problem used a friend'* Snap-on scan tool. In the course of conversation I learned that these Cars are incredably integrated. He took in an Olds with trans skipping gears and not locking up/locking up prematurely. Rebuilt trans completely (selinoids and all) PROBLEM STILL THERE! Turned out the ignition switch was bad!?! New switch and problem gone.
I have had many more "enjoyable" experiences with both the Bonneville and the Park Ave.
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Old 10-11-2004, 12:09 AM   #2
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Welcome, neighbor. Old news for us except for that ignition switch. You sure that'* not just a Washington thing?
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Old 10-11-2004, 01:04 PM   #3
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I'm sure most peoplr that have owned any GM with the 3800 over the last decade have seen some of these! I was amazed at the ign switch one too, but it makes some sense. Like anything electrical, juice "looks" for the path of least resistance, in ths case bad switch forced a pathway thru the trans control circut. I wonder how many more problems we may see as these cars age because of poor contacts. Still enjoying the Bonneville though.
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