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GM dealership tech needed?

rivermobster

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PM me, if don't wanna say out loud...

I have an issue with my daughters Volt.

Thanks! 😁
 

MonkeyButt70

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I just sold my Volt. Great platform in concept but when the battery system degrades they are basically junk. Price to repair the system is way more than the market value. When these early electric cars fail they are a total loss.
 

monkeyswrench

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I just sold my Volt. Great platform in concept but when the battery system degrades they are basically junk. Price to repair the system is way more than the market value. When these early electric cars fail they are a total loss.
You can rebuild the battery packs on them as well. Just have to load check and ohm out the cells, and replace the bad ones. Some of the scanners will even tell you what cells are issues to start with. The inverter/converter things aren't too problematic, just typical electronic issues. I've been kind of keeping my eyes open for one with issues, as it would be a great upgrade from the current Prius I've abused for 4 years.
 

wzuber

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PM me, if don't wanna say out loud...

I have an issue with my daughters Volt.

Thanks! 😁
When I read the title I thought you were looking for a job so you could afford to pay the remodeling. Bill on your pontoon. Haha
You should prolly bring your own tube of lube just in case....lol
 

Sleek-Jet

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I just sold my Volt. Great platform in concept but when the battery system degrades they are basically junk. Price to repair the system is way more than the market value. When these early electric cars fail they are a total loss.

The battery is going to be an issue with any EV or Hybrid at some point.

My brother works for a cab company in Las Vegas, they replace the batteries in their Prius fleet on the regular. Toyota told them it couldn't be done in the field but he and another guy figured it out and they do the swap with company mechanics.
 

rivermobster

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@Sharky

Nevermind. False alarm...

Stupid Chevy, in their infinite wisdom, throws a check engine light with multiple fault codes And a high voltage system failure warning on the dash, because......

The battery coolant level system is low. 🙄

Added some coolant and all is well. Typical GM stupidity. A low coolant warning would have sufficed.

There is a TSB on these fault codes, but it looks like I don't need to do that at the moment. Phew.

Also had to fix a broken window regulator. Twenty minutes and done.

And swap out the original key for the spare key and put a new battery in the spare key. Had to put some air in the tires as well.

Dad is the hero again! 🤣😜

20241124_162032.jpg
20241124_162632.jpg
 

monkeyswrench

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You know, if you wouldn't had been all top secret cryptic, we may have been some assistance 🤣
Another "Oh Shit" light Christmas tree can be caused by a low 12v battery. The system gets stupid when the voltage gets low, and sets all kinds of stuff, ABS, Stability, Hybrid control, etc... All because a 12v battery is good, but not good enough.
 

rivermobster

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You know, if you wouldn't had been all top secret cryptic, we may have been some assistance 🤣
Another "Oh Shit" light Christmas tree can be caused by a low 12v battery. The system gets stupid when the voltage gets low, and sets all kinds of stuff, ABS, Stability, Hybrid control, etc... All because a 12v battery is good, but not good enough.

True story.

I Really did think I was gonna need someone to reprogram per the TSB.

Didn't have the car here at the time though.

Once I had the car in my hands, with my fault code reader, AND saw the coolant was low...

Add coolant. Clear faults. All done.

Next! 😜
 

Outdrive1

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@Sharky

Nevermind. False alarm...

Stupid Chevy, in their infinite wisdom, throws a check engine light with multiple fault codes And a high voltage system failure warning on the dash, because......

The battery coolant level system is low. 🙄

Added some coolant and all is well. Typical GM stupidity. A low coolant warning would have sufficed.

There is a TSB on these fault codes, but it looks like I don't need to do that at the moment. Phew.

Also had to fix a broken window regulator. Twenty minutes and done.

And swap out the original key for the spare key and put a new battery in the spare key. Had to put some air in the tires as well.

Dad is the hero again! 🤣😜

View attachment 1453562 View attachment 1453563


I’m shocked it was something so simple. 🤦🏼‍♂️🤣
 

Bigbore500r

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@Sharky

Nevermind. False alarm...

Stupid Chevy, in their infinite wisdom, throws a check engine light with multiple fault codes And a high voltage system failure warning on the dash, because......

The battery coolant level system is low. 🙄

Added some coolant and all is well. Typical GM stupidity. A low coolant warning would have sufficed.

There is a TSB on these fault codes, but it looks like I don't need to do that at the moment. Phew.

Also had to fix a broken window regulator. Twenty minutes and done.

And swap out the original key for the spare key and put a new battery in the spare key. Had to put some air in the tires as well.

Dad is the hero again! 🤣😜

View attachment 1453562 View attachment 1453563

Your mad it it for being ran low on inverter system coolant, and throwing warning lights to preserve its own life 😂.

Stupid GM!
 

lbhsbz

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True story.

I Really did think I was gonna need someone to reprogram per the TSB.

Didn't have the car here at the time though.

Once I had the car in my hands, with my fault code reader, AND saw the coolant was low...

Add coolant. Clear faults. All done.

Next! 😜
Why was the coolant low?
 

rivermobster

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Why was the coolant low?

It's a more or less sealed system...

I'm gonna guess cause the car is 10 years old? It uses the standard 50/50 mix. Water evaporates.

I'll check the level again in five years or so.
 

rivermobster

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Your mad it it for being ran low on inverter system coolant, and throwing warning lights to preserve its own life 😂.

Stupid GM!

Who said I was mad??

On one hand...

A simple coolant and level sensor, would have kept my daughter from freaking out.

On the other hand...

Adding one in, to a system, that only runs low every 10 years or so, would seem to be a bit overkill.

The sensor would probably go bad before the coolant ever got low!

I get how these things work. 😉
 

rivermobster

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It has one...that's why the message showed up lol.

Not Exactly a low coolant warning, but yeah, you are correct! Lol

😜

The P1FFE fault code on a 2014 Chevy Volt indicates an issue with the High Voltage Battery Energy Control Module, specifically related to the energy balance or energy storage system. It is commonly tied to the following conditions:

1. Battery State of Charge Imbalance: This could mean the battery management system has detected an imbalance between the cells in the high-voltage battery pack.


2. Faulty Energy Control Module (ECM): There could be a malfunction in the module responsible for monitoring and balancing the high-voltage battery pack.


3. Charging or Drivetrain Problems: Problems with the vehicle's charging system or the drivetrain interacting with the high-voltage battery.



Common Causes:

Battery degradation or faulty cells.

Communication issues within the energy management system.

Faulty or loose battery connections.

Software issues in the Battery Energy Control Module.


Possible Steps to Fix:

1. Scan and Clear Codes: Use an advanced diagnostic tool to confirm the fault and attempt to clear the code. See if it returns.


2. Inspect Battery Connections: Check for corrosion or loose connections in the high-voltage system.


3. Update ECM Software: Ensure the vehicle's software is up-to-date. This may require visiting a dealer or specialist.


4. Cell Balancing or Replacement: A professional might need to rebalance the cells or replace faulty ones if the imbalance persists.



For safety, high-voltage systems require special tools and expertise. If you're not trained in handling EV systems, consider seeking assistance from a certified technician.
 

Sharky

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It's a more or less sealed system...

I'm gonna guess cause the car is 10 years old? It uses the standard 50/50 mix. Water evaporates.

I'll check the level again in five years or so.
If its 10 years old, it should have had the coolant replaced by now.

50/50 Dexcool & water.. They make pre-mixed Dexcool.

Also the cooling system for the battery takes special tooling to get all the air out. You may have to use a scan tool to command the coolant pump on.

Cooling systems on GM EV's are a completely different system than a regular cooling system on an ICE vehicle.
 

monkeyswrench

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I think what we're seeing here, is Joe needs to pony up money for a better scanner. Generic codes may get you in the ballpark...or several of them. Just like TechStream, some of the stuff is more detailed.
 

rivermobster

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I think what we're seeing here, is Joe needs to pony up money for a better scanner. Generic codes may get you in the ballpark...or several of them. Just like TechStream, some of the stuff is more detailed.

Well...

I'd normally agree with you. 👍🏼

But, since I actually Know how to diagnose, all I Need is to be in the ball park.

Problem solved. I'm good here.

I continue to remain...

Un-phased, by any problem that flows my way. 😉
 

FreeBird236

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Well...

I'd normally agree with you. 👍🏼

But, since I actually Know how to diagnose, all I Need is to be in the ball park.

Problem solved. I'm good here.

I continue to remain...

Un-phased, by any problem that flows my way. 😉
Now that you're becoming so well versed on electric vehicles, there's only one thing left for complete certification: You need to put a 9-volt battery on your tongue. 😂
 

lbhsbz

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Well...

I'd normally agree with you. 👍🏼

But, since I actually Know how to diagnose,

Diagnostic Tree:

- Step one: arm yourself with inadequate harbor freight grade code reader
- Pull codes
- Ask the internet what the codes mean
- Talk shit back to the internet for pointing out obvious things and answering stupid question with stupid answers
- Perform basic checks that your daughter could have done with information gained from reading a few pages of the owner's manual
- Add 2 quarts of coolant to coolant reservoir which was low, like the message on the dash told you
- Claim Master Diagnostician Status
 

Sharky

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I think what we're seeing here, is Joe needs to pony up money for a better scanner. Generic codes may get you in the ballpark...or several of them. Just like TechStream, some of the stuff is more detailed.
Amen.

Especially on a GM EV. Even though the Volt is a hybrid, it is considered an EV by GM.

Tinker toy code readers won't show captured high voltage codes. Or system isolation codes and faults. And just barely most "U" (communication) codes. Most aftermarket code readers won't show history codes on a GM EV.
 

rivermobster

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Diagnostic Tree:

- Step one: arm yourself with inadequate harbor freight grade code reader
- Pull codes
- Ask the internet what the codes mean
- Talk shit back to the internet for pointing out obvious things and answering stupid question with stupid answers
- Perform basic checks that your daughter could have done with information gained from reading a few pages of the owner's manual
- Add 2 quarts of coolant to coolant reservoir which was low, like the message on the dash told you
- Claim Master Diagnostician Status

I'm gonna assume the stupid question/stupid answer branch...

Is referring to RDP?

🤔
 

rivermobster

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Amen.

Especially on a GM EV. Even though the Volt is a hybrid, it is considered an EV by GM.

Tinker toy code readers won't show captured high voltage codes. Or system isolation codes and faults. And just barely most "U" (communication) codes. Most aftermarket code readers won't show history codes on a GM EV.

Now I understand why the world hates RDP...

Even though if fixed the car, 10min after I laid hands on it...

You guys are arguing about what code reader I used???

1611276703689.jpg


P. S. It's an OCT code reader. 😜
 

monkeyswrench

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It’s OTC….and those make better wheel chocks than they do diagnostic tools.
Nah, OTC and the old SnapOn bricks are honestly the best for 7.3's I think. I have the shiny, new, Bluetooth and tablet thing, works great on big stuff, but the OTC comes out for 7.3's and the old 5.9 trucks. Never tried it on a hybrid though🤨
 

rivermobster

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Nah, OTC and the old SnapOn bricks are honestly the best for 7.3's I think. I have the shiny, new, Bluetooth and tablet thing, works great on big stuff, but the OTC comes out for 7.3's and the old 5.9 trucks. Never tried it on a hybrid though🤨

I actually wouldn't mind one of these things. Pretty decent black Friday deal? 🤔

 

monkeyswrench

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I actually wouldn't mind one of these things. Pretty decent black Friday deal? 🤔

Haven't used one of those. Seen a couple though, like my buddy has one so he can regen his semi. Mine plugs in with a cord to a brick sized interface, that connects wirelessly to the tablet. Works nicely, when having the live data on sensors, and being under the car messing with harnesses and plug ends.
 

rivermobster

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Haven't used one of those. Seen a couple though, like my buddy has one so he can regen his semi. Mine plugs in with a cord to a brick sized interface, that connects wirelessly to the tablet. Works nicely, when having the live data on sensors, and being under the car messing with harnesses and plug ends.

Live data and break out boxes...

Yep. SO happy to be retired. 😎
 
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