Do I need to do anything with this battery current sensor?

[Peter Tremonti]

I'm replacing the battery on my 2005 Suburban. It didn't want to start this morning the first 2 tries (clicking acting dead) but then started right up. Stopped somewhere for about 10 minutes and it did it again. When I got to work, the battery smelled like rotten eggs and I ordered a new one to be delivered to my job.

I'm wondering if this sensor/module thing needs to be told it has a new battery to monitor like Audi and Mercedes. If not then all is well. Hopefully somebody can let me know if anything needs to be done with it. I searched the service manual but couldn't find anything about it or even what it does besides monitoring the current draw/charge.

 

[NoReverseYukon]

I would guess no; when I swapped mine out I didn't even see anything like this in my 2001.

 

[TJ Baker]

Nothing needs to be done about it. That monitors current through the battery and regulates the alternator output accordingly. No need to be running the alternator full out when the battery is fully charged!

 

[Peter Tremonti]

Makes sense to me. Audis like to know that the battery is new and fully charged so it can put back in as much power as is used when the engine is started and accessories are on.

It becomes a problem when it tries to shove more power into fully charged replacement battery if you don't tell the module.

 

[swathdiver]

Makes sense to me. Audis like to know that the battery is new and fully charged so it can put back in as much power as is used when the engine is started and accessories are on.

It becomes a problem when it tries to shove more power into fully charged replacement battery if you don't tell the module.

The RVC system automatically knows how to care for the battery, not to overcharge it, figure out its temperature, state of charge, etc. Fascinating system if you ask me.

 

[OR VietVet]

A very mobile battery tender.......

 

[Peter Tremonti]

The RVC system automatically knows how to care for the battery, not to overcharge it, figure out its temperature, state of charge, etc. Fascinating system if you ask me.

I'll have to look up some info on how it works on these vehicles. Sounds interesting. I'm wondering how the temp sensor determines the battery temp or if it assumes based on engine bay temps.

 

[swathdiver]

I'll have to look up some info on how it works on these vehicles. Sounds interesting. I'm wondering how the temp sensor determines the battery temp or if it assumes based on engine bay temps.

It estimates the battery temperature. There are excellent descriptions of the system in the shop manuals and in the Upfitter's Guides which can be freely downloaded from GMs website.

 

[Woodblocker55]

It estimates the battery temperature. There are excellent descriptions of the system in the shop manuals and in the Upfitter's Guides which can be freely downloaded from GMs website.

I have to retighten my battery posts every about 3-5 months I get the reduce engine speed on the dic.. is that because my module on the negative cable is getting bad. Cooking my battery ? Ya all do tight battery post 1/ 16 a turn and all is fine again 3-5 months . It's crazy ..

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[Doubeleive]

I have to retighten my battery posts every about 3-5 months I get the reduce engine speed on the dic.. is that because my module on the negative cable is getting bad. Cooking my battery ? Ya all do tight battery post 1/ 16 a turn and all is fine again 3-5 months . It's crazy ..

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that is caused by the throttle body not your battery, you can try cleaning it or just replace it if it is a continual problem, it may just be coincidental that adjusting the battery cable clears the code or resets whatever is happening with the throttle body.

 

[Woodblocker55]

that is caused by the throttle body not your battery, you can try cleaning it or just replace it if it is a continual problem, it may just be coincidental that adjusting the battery cable clears the code or resets whatever is happening with the throttle body.

Throttle body will be here Wednesday [emoji106]

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[Woodblocker55]

Came across this before putting the new throttle body in. 2006 GMC yukon xl slt ..
Is there a way with scanner to tell if they ever updated pcm ?

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[Fless]

If you have a Tech 2 you can set up to program the PCM and TIS2000 will tell you if a newer calibration is available.

Something like this (but there are others out there):

 

[Doubeleive]

Came across this before putting the new throttle body in. 2006 GMC yukon xl slt ..
Is there a way with scanner to tell if they ever updated pcm ?

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If you have a tech2 it can read the current calibrations and then you could use tisweb and check to see if the version is current or not. or look online.

 

[Doubeleive]

optionally if you do not have a tech2 you could take it to the dealer and ask them to install all current available calibrations, they charge about $100 to do the update.

 

[Woodblocker55]

optionally if you do not have a tech2 you could take it to the dealer and ask them to install all current available calibrations, they charge about $100 to do the update.

I bet there is a bunch other updates if now I know pcm was never updated since 2006 .
Might be worth the $100 [emoji848]

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[Doubeleive]

I bet there is a bunch other updates if now I know pcm was never updated since 2006 .
Might be worth the $100 [emoji848]

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If you decide to go that route just know it is basically a dice roll as to if it will fix anything or not.

 

[Fless]

If you have a tech2 it can read the current calibrations and then you could use tisweb and check to see if the version is current or not. or look online.

Are you thinking that tisweb would have more recent calibrations than TIS2000 for a 2006?

 

[Woodblocker55]

If you decide to go that route just know it is basically a dice roll as to if it will fix anything or not.

But at least I would know it wasn't software/ firmware causing the issue . It's doing exactly what the TSB said down to all 3 codes and does it without moving . And I cleaned the grounds . So it might just be it .. I will be shocked if was never updated . As 2 guys before owners were very picky about maintenance and operation.

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[Woodblocker55]

Are you thinking that tisweb would have more recent calibrations than TIS2000 for a 2006?

I just have the mx plus adapter for scanner bluetooth is there any way that tell me witch version in pcm ?

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