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Old 01-31-2006, 10:49 AM   #1
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Side post battery

We have a Everstart side post battery in our 1995 Suburban that has the positive cable bolt keeps backing off and l keep tightening it up again, it stays tight for about four days and it is losse again, I got the specs for tightening the bolts from Interstate bateries( 70-90 inch pounds) Has anyone ran into this problem with their GM rigs
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Old 01-31-2006, 07:51 PM   #2
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Quote:
Originally Posted by Gene Wissink
We have a Everstart side post battery in our 1995 Suburban that has the positive cable bolt keeps backing off and l keep tightening it up again, it stays tight for about four days and it is losse again, I got the specs for tightening the bolts from Interstate bateries( 70-90 inch pounds) Has anyone ran into this problem with their GM rigs
You bet I have! Side post batteries have been notorious for problems although I've only had a problem with one of three I have owned. I noticed that the + battery cable kept working loose. I tightened it up with one of those ratcheting devices they sell at Walmart which is designed to fail if you tighten it up too much. I finally ran into a problem where the 2500hd did not do anything when I turned the key and after several times it would start up. I'd put it in Reverse and the transmission wouldn't do anything for 3-4 seconds. I put it in Drive not long afterwards and it had a delay of almost 2 seconds before engaging. I finally traced it to a cracked case around the bottom portion of the + post of the battery. It was slowly leaking acid which was causing corrosion within the red post cover. I took the cap off, cleaned the inside copper connection and it was then I noticed a slight wetness down the side of the battery. My only guess was that it might have been overtightened at the factory and when it worked loose I just helped it along. Hard to tell. I replaced the battery in '04 and things have been fine since.
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Old 01-31-2006, 08:18 PM   #3
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GM is slowly getting away from the side post battery for these reasons, plus a couple of more.
Extra reason #1- The internal connection to the + terminal will break internally, causing the vehicle to not start.
Extra reason #2- The plastic cover over the terminals makes cleaning the connections very difficult, as well as helping the accumulation of dirt, corrosion, etc in that area.
Extra reason #3- The seal around the terminals, particularly around the + terminal, will start to leak. This is in addition to the acid that will leak out of the threaded part if a terminal is overtightened, or a bolt that is just a hair too long is used, poking a hole in the terminal.
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Old 02-01-2006, 08:11 AM   #4
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I will check around for that battery wrench, it will be easier than carrying a tool box around.
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Old 02-01-2006, 08:22 AM   #5
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I just replaced my battery last week for this reason. The positive terminal would continue to come loose, losing contact eventually.
Upon inspection I found that the serrated part of the battery cable end had made matching notches in the positive battery terminal, causing the connection to come loose easily. Replacing the battery and cleaning the battery cable ends solved the problem for now. To be sure, also ordered one of the two positive battery cables, the inner one that leads to the fuse box on my 97 Suburban. The outer one is ok, it leads to the alternator and starter.The inner cable took similar damage as the old battery terminal.
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