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PostPosted: Sun Jun 14, 2009 10:53 pm 
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Joined: Sun Jun 14, 2009 9:42 pm
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Year and Trim: 1995 bonneville
just joined the bonneville club. have been looking at the site for a few days and find it very informative. have a 1995 bonneville and think it is a great car. i am having a strange problem with what seems to be electrical. if the car wont start the check engine light comes on dimly and flickers, and at the same time the fuel pump relay is clicking like crazy as well as another relay under the hood against the firewall. i have put in a new battery , cleaned all the ground connections as suggested on the site and tried the fuel pump test using the primer connection at the battery. when the check engine light comes on solid when the key is turned on the car starts ok but may or may not stay running then it just dies.if the check engine light comes on dim when key turned on it just cranks and the relays go crazy but wont start.sometimes turning the key on and off several times gets the engine light to come on bright any help would be greatly appreciated.
zach


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PostPosted: Mon Jun 15, 2009 9:45 am 
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Joined: Tue May 20, 2008 4:34 pm
Posts: 3606
Location: Buffalo New York
Year and Trim: 99 SSEi
That could be caused by a bad PCM (computer). I'd try unplugging the PCM & check for any corrosion on the pins. If that doesn't help then try getting another one from a junkyard.

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PostPosted: Mon Jun 15, 2009 9:50 am 
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Year and Trim: '17 Silverado 1500
I'm with Mike. 94's and 95's are known for PCM's going bad. That'd be the first thing I checked.

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