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Discussion Starter #1
My 97 6.5 will turn all the dash lights on and off in unison with the glow plug relay the dash goes dark and will not crank over I get no codes other than the EGR that has been there since i blocked it off. It has done this a couple of times and I have disconnected the batteries, reconnected and it will be ok for a few days. Do you think it could be ECM problems?
 

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Sounds like dead batteries to me.
 

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Discussion Starter #3
I just put in two new ones but i will recheck they may have got run down. could be something left on. Thanks I have been so wrapped up in the technical problems (miswired plugs) etc. I forgot to check the obvious.
 

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Could be the infamous bad GM battery cables, then. Might want to do a search, but peel back the insulation on both cables (especially the passenger cable dual connection), and look for corrosion in the wire and between the terminals.
 

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I'd say you have some intermittent grounds
 

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Discussion Starter #6
Cable bolt was tight cable was loose copper washer fixed that problem, you guy's are big help.
Thanks:ro)
 
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