Battery age?, how to change - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 03-31-2006, 01:26 PM
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Battery age?, how to change

OK guys. Iwas thinking about it.
I think its time to change my battery before im stranded somewhere.
It has not given me any problems yet. Its the Original factory battery thats been in there since at least Aug of 2002. so that makes it about 44 months old..... so its about time for a change. (by the way whats the battery life rated at on these factory batts?).

Ok, so for you who have changed batteries- I think theres a bar that has to be removed so the battery comes out.. but what else? any tips or tricks?

any of you have trouble losing engine control settings? or is it as simple as take out and put in?
Ive heard stories on some of the trucks and passenger cars/
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  #2  
Old 03-31-2006, 01:39 PM
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If you got 44 mo that is real good life. Some start leaking way before that. Remove battery cables, battery cover and bar. There may be a hold down at bottom of battery. Loosten if it is present. Pull old battery out. Check for any leaking battery acid. If no leaks install new.
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  #3  
Old 03-31-2006, 01:39 PM
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Go for it! ... Your factory battery is on borrowed time, they usually give up the ghost shortly after the 36 month warranty. Mine went south pretty much w/o warning at around 41 months.

Change out is pretty simple, you unbolt the support bar/strut and remove the battery cables. (Neg first to avoid accidents). Lift off the cover and loosen the hold-down bolt.....its not necessary to fully remove it, just lossen it and slide the battery forward and lift out.

Reverse the procedure for installing the new battery. - Takes about 15 minutes of time, if you have the wrenches handy.

If you just want a good battery, Wal-Mart's Everstart-Maxx series ($59) was CR best buy and fits under the cover. Also comes with 2 or 3 years of roadside assistance and free replacement.
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Old 03-31-2006, 01:47 PM
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I've had factory batteries last 5yrs+ without issue, but it's not worth pushing it. Just use caution if you are using an all metallic wrench on that positive battery terminal. If you hit the wrench on anything metal (ground it out) bad electrical things can happen! There was a recent post floating around in regards to this. Blown BCM was the result IIRC.

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Old 03-31-2006, 02:03 PM
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If you haven't been removing and cleaning terminals once a year, you might have a problem removing the positive terminal from the battery.
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Old 03-31-2006, 02:04 PM
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hopefully i have no trouble with that + terminal.
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  #7  
Old 03-31-2006, 02:33 PM
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Quote:
Originally Posted by turbomike
If you haven't been removing and cleaning terminals once a year, you might have a problem removing the positive terminal from the battery.
Hey good tip. The GM posts can be a farging nightmare! They will cross-thread nice & easy too. I wonder if never-seize or silicone grease would be good to put on the post threads?!?

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Old 03-31-2006, 02:46 PM
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[I]Just use caution if you are using an all metallic wrench on that positive battery terminal. [/I] That's why you disconnect the negative side first. That way even if you do slip and touch sonmething metal while taking off the + side, it won't make a complete circuit and short out.
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  #9  
Old 03-31-2006, 03:03 PM
chunn7 chunn7 is offline
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I have an '02 also and we just changed the battery last week - it was completely dead. You're wise to do it before it's too late!
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  #10  
Old 03-31-2006, 03:17 PM
Trefilov22 Trefilov22 is offline
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Wow, thats a pretty low age for a battery, must be junky. My factory battery in my 1998 Mustang is actually still working.... 154k miles and 8 years later....
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