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Discussion Starter #1
I have lost all regen. None on braking, the L mode does nothing and regen paddle is useless. When braking, the power display never goes negative.

The scary thing is that with brake pedal off, it is "idling" at 46 km/h.

I had the propusion recall done today and it did not change anything.

I will be contacting the dealer tomorrow, but I am just curious if anyone else has had this happen?
 

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Any CELs or other display messages? Did this happen at the dealer lot or on the way home? Seems strange if the dealer didn't start the car and at least give it a test drive before delivery.

The only time I lost all regen was when my car THOUGHT (incorrectly) that the battery was overcharged and shut off all regen to stop any electricity from going to the battery.

However, I did not have an idling engine.
 

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Was your Bolt fully charged?

It can not regen when at full charge.

Solution: Use Hilltop reserve for charging.

Nevermind, thought you said Bolt, just saw it was Volt. So that cant be the problem..... :)
 

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I have lost all regen. None on braking, the L mode does nothing and regen paddle is useless. When braking, the power display never goes negative.

The scary thing is that with brake pedal off, it is "idling" at 46 km/h.

I had the propusion recall done today and it did not change anything.

I will be contacting the dealer tomorrow, but I am just curious if anyone else has had this happen?
Given your forum location, I have a feeling it's probably very cold where you live. Your engine is probably running due to the cold temperatures (search the forum for ERDTT, or "engine running due to temperature"). If the temperature drops below 35 *F / 2 *C (normal mode) or 15 *F / -10 *C (Deferred engine-assist heat mode), the engine will cycle on and off to keep itself warm. While the engine is running, it generates power, which goes into the battery if you are not accelerating. The battery can only accept so much power at any given moment, and that amount drops in the cold, so your regenerative brakes lose some or all of their effect while the engine is on.
 

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Discussion Starter #5
-No cel
- full or not battery
- cold or mild

It just does all the time. Some of it matches the symptoms quoted in the recall, so I was hoping it would fix it and did not mention it when I had the recall done.
 

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Was your Bolt fully charged?

It can not regen when at full charge.

Solution: Use Hilltop reserve for charging.

The OP posted in the Gen II forum and does not appear to have a Bolt EV.
 

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Regen should have nothing to do with the battery SOC. Otherwise you would never have regen on a full battery.
I never do have regen on a full charge. There's no room to put the current from regen; I have to drive a couple miles before I can actually use regen brakes to slow down at all.
 

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-No cel
- full or not battery
- cold or mild

It just does all the time. Some of it matches the symptoms quoted in the recall, so I was hoping it would fix it and did not mention it when I had the recall done.
Can you explain more about what you mean by "fast idle"? If your engine is running when it's not cold outside, and your battery is charged, there is a problem with your car and you should take it to a dealer. I'm surprised there'd be no CEL in such an event though...
 

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Very odd and strange behavior. For something this dramatic you'd expect a boatload of error codes. Let us know what your dealer says. Also is this a Volt or a Bolt EV? I assumed your reference to idling and the fact you've posted in the Volt forum meant you had a Volt, but some are thinking it's a Bolt EV.
 

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Discussion Starter #11
-No cel
- full or not battery
- cold or mild

It just does all the time. Some of it matches the symptoms quoted in the recall, so I was hoping it would fix it and did not mention it when I had the recall done.
Can you explain more about what you mean by "fast idle"? If your engine is running when it's not cold outside, and your battery is charged, there is a problem with your car and you should take it to a dealer. I'm surprised there'd be no CEL in such an event though...

Well, I'm sitting in the waiting room at the dealer now...

The fast idle, for lack of better words, is once I get above 25km/h or so, it will creep up to 45km/h all by itself. If I let off the accelerator pedal at 50+, it won't slow down beyond 45. It's like driving an old 3 speed automatic with the engine idling really fast.
 

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Discussion Starter #12
Mystery solved: the accelerator pedal was getting caught on my Huskyliner carpet. Time to call Huskyliner...
 

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I was going to guess that after I thought about it for a while. I thought when you meant "idle" that the engine was idling, not that the vehicle "creep" was faster than it should have been.

Once I realized that's what you meant, I thought it was probably an issue with the accelerator pedal not being released all the way. I'm actually surprised the car lets you start it and shift into gear with the accelerator depressed at all.
 

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Did the dealer charge you for the services? Seems a stuck mat would be considered user error and not GM's fault.

This is the fear I have for the engine back fire and some internal trim vibration sounds. If I take it in they'll charge me for the visit since nothing was wrong.
 

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Discussion Starter #16
I was charged. They took it for a drive and hooked it up to the scan tools. Must have confused the tech too for him to not check the mats right away...
 

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Thanks for the confirmation. Makes sense but still is a bummer. I will have to be careful pressing for noisy trim issues.
 

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Proper fitting floor mats are a really big deal... remember Toyota's problems with the 'stuck accelerators'? And it turned out to be the floor mat hooks (or lack thereof)? Not sure if the Gen2 Volts have the 'pegs' in the floor but any replacement floor mat should be able to snap onto those pegs to hold their position. The pictures on Huskyliner's website do show openings for what looks like peg holes, are they in place on your floor?
 

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Even if the Huskyliners' holes matched the OEM mat's holes, I can see GM/dealership saying the Huskyliner's are not approved mats and are aftermarket mods. Thus, warranty doesn't cover any damage done by them (stuck gas pedal).
 

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Discussion Starter #20
Thanks for the confirmation. Makes sense but still is a bummer. I will have to be careful pressing for noisy trim issues.
The best way to have annoyances looked at is to mention them when you're in for other things. Something that only takes a few minutes to look at won't cost the service department if they're getting paid for something anyways (they get paid by GM for recall work).

I've done this in the past on many different vehicles and had the annoyances fixed. Warranty repairs are charged to the maker, so anything that can be done under warranty is good business for them and they keep the customer happy.
 
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