Bettery replacement

tmf6902 · May 16, 2005

I have the factory option dual batteries. It looks like one of them is leaking as the tray is beginning to get corroded with this white s**t, it's the only thing that I think it could be, so I am gonna replace it. My question is, if I replace one of them, do I need to make sure the new one has the same ammount of CC amps, if one is stronger than the other will that be bad? Should I just go ahead and replace both?

The truck is only 3 years old and they are the batteries from the factory, and the truck starts fine....I just don't like all the corrosion around the battery, and I want to get it out of there before it eats through my d**n truck.

thanks

TMF

SS Crew · May 16, 2005

Take it to the dealer, they might be able to pro-rate your battery. If your other battery is fine, then leave it. You will notice when the other battery goes bad when your volts gauge is over charging - you'll notice it.

Silverado4x4 · May 16, 2005

I would try the dealer also but being the truck is 3 yrs old I dought they will do anything, and if you do replace them replace both not just one, if you replace just one the old battery will pull down the new one.

tmf6902 · May 16, 2005

yeah the volts guage is fine.....atleast it's reading what it has always read. I just have what looks like leakage coming from one of them.....I was under the impression batteries lasted longer.....but after two years in the FL heat I suppose I am lucky it lasted this long

SS Crew · May 16, 2005

I would try the dealer also but being the truck is 3 yrs old I dought they will do anything, and if you do replace them replace both not just one, if you replace just one the old battery will pull down the new one.

<{POST_SNAPBACK}>

The dealer should be able to test the other battery and let you know if it is still putting juice out or if they recommend replacing it.

I know what you're saying, of course the dealer will say replace it, but ask for see the readout from the battery tester. Or if your in good with your dealer, they might just bring tester out to you in the service line if it's not too crowded.

BBSilverado · May 16, 2005

I have the factory option dual batteries. It looks like one of them is leaking as the tray is beginning to get corroded with this white s**t, it's the only thing that I think it could be, so I am gonna replace it. My question is, if I replace one of them, do I need to make sure the new one has the same ammount of CC amps, if one is stronger than the other will that be bad? Should I just go ahead and replace both?

The truck is only 3 years old and they are the batteries from the factory, and the truck starts fine....I just don't like all the corrosion around the battery, and I want to get it out of there before it eats through my d**n truck.

thanks

TMF

<{POST_SNAPBACK}>

That depends on witch dual battery setup you have, GM offered two setups. One was an isolated setup and the other was a direct connected type. All diesels have the direct connected setup, gassers could have either type. Check your RPO codes in the glove box, TP2 is the non isolated dual setup and TQ3 is the isolated setup. If you have TQ3 then it would be OK to replace just one, But I would probably do both anyway.

tmf6902 · May 16, 2005

So I checked and I have the TP2 so I suppose I will replace both...I was probably going to do that anyway. So does this mean that I need to remove the negative battery cable from both batteries when I am doing electical stuff? ooops...ya learn something new every day

BBSilverado · May 17, 2005

So I checked and I have the TP2 so I suppose I will replace both...I was probably going to do that anyway. So does this mean that I need to remove the negative battery cable from both batteries when I am doing electical stuff? ooops...ya learn something new every day

<{POST_SNAPBACK}>

Yep, remove the cable from both batteries, they are connected together all the time.

SS Crew · May 17, 2005

So I checked and I have the TP2 so I suppose I will replace both...I was probably going to do that anyway. So does this mean that I need to remove the negative battery cable from both batteries when I am doing electical stuff? ooops...ya learn something new every day

<{POST_SNAPBACK}>

It's hard to get the batteries out with the cables connected.

RICH256 · May 17, 2005

For just about all you could want to know about batteries check:

http://www.batteryfaq.org

99-2door · May 19, 2005

So I checked and I have the TP2 so I suppose I will replace both...I was probably going to do that anyway. So does this mean that I need to remove the negative battery cable from both batteries when I am doing electical stuff? ooops...ya learn something new every day

<{POST_SNAPBACK}>

It's hard to get the batteries out with the cables connected.

<{POST_SNAPBACK}>

He was talking about doing any electrical work, not just removing the battery.

I love when people are trying to be a smart-azz and say something really dumb....

Corvette Jabo · May 19, 2005

I work for a larg lead acid battery MFG. If the batteries were less than 1 year old you could get buy with only replacing 1. At the age of your batteries you need to replace both batteries. If it’s a factory setup the batteries are not isolated and are in parallel. If one battery has issues and is telling the alternator “I am low on charge, charge me” the other fully charged battery gets over charged and can boil the water away on the fully charged battery.