Recall - Improperly heat treated half-shaft on my 2021 LT1

NotFast · 06-09-2021, 11:48 AM

Just got a letter from GM that states my left half shaft was likely not properly heat treated and it needs to be replaced.

Interesting that it's only the one (their "left shaft machine" wasn't working that day?). Anyone else see this letter yet?

arpad_m · 06-09-2021, 01:06 PM

Our half shafts are asymmetrical, so it makes sense if only the left one is subject to this recall. Good luck

NotFast · 06-09-2021, 02:39 PM

Thanks! It's being inspected next Tuesday & I'll update this thread. I'm also curious how many other 6-ers here have the same possible issue.

NotFast · 06-15-2021, 09:20 AM

And... my car is affected. The Chevy dealer does not know when parts will become available, so I'm just going to keep driving it like normal for now.

4 Low · 06-15-2021, 02:38 PM

I got the same "love" letter in the mail yesterday for my '21 SS.

cmitchell17 · 06-15-2021, 08:28 PM

I am wondering why this is a safety issue and therefore a recall?

NotFast · 06-15-2021, 09:47 PM

Honestly, my letter did not use 'recall' at all. The language was pretty vague. My service advisor wasn't real worried about when the parts arrive & made it sound more like the heat treatment was more for corrosion purposes.

MR2Aaron · 06-16-2021, 05:49 PM

I got the same notice about my 2021 SS - it doesn't say it's a recall (which usually has the connotation that "the government is making us do this"), so it appears to be voluntary.

I wonder if someone actually broke an axle and they're doing this to avoid warranty claims for all the damage a broken axle would cause.

ABM1SSSG3 · 06-16-2021, 06:18 PM

I wonder if someone actually broke an axle and they're doing this to avoid warranty claims for all the damage a broken axle would cause.[/QUOTE]

They haven't been as concerned about the same potential damage when the half shaft bolts/retainers have backed out. There is a TSB, but they will not cover this under warranty unless it scatters all over the street.

MR2Aaron · 06-16-2021, 06:33 PM

Quote:

Originally Posted by ABM1SSSG3

I wonder if someone actually broke an axle and they're doing this to avoid warranty claims for all the damage a broken axle would cause.

They haven't been as concerned about the same potential damage when the half shaft bolts/retainers have backed out. There is a TSB, but they will not cover this under warranty unless it scatters all over the street.

So, they make you buy new bolts/clips/whatever yourself unless it fails catastrophically?

ABM1SSSG3 · 06-16-2021, 06:42 PM

Quote:

Originally Posted by MR2Aaron

So, they make you buy new bolts/clips/whatever yourself unless it fails catastrophically?

That's the general consensus. Many of us have bought the new hardware, longer bolts, and the retainers, and replaced them ourselves. I would imagine some have paid to have the dealer do it proactively. I would like to hear from someone who has had it covered without the street mess.

Martinjlm · 06-17-2021, 07:04 AM

Quote:

Originally Posted by NotFast

Thanks! It's being inspected next Tuesday & I'll update this thread. I'm also curious how many other 6-ers here have the same possible issue.

It is most likely a specific lot run of the part number in question. That would mean that the issue is isolated to a small number of 2021 vehicles. Probably discovered in a recent random audit, and they were able to track it down to a specific lot of parts. The dealer would be informed via a TSB how to determine if your half-shaft belongs to the affected group. I used to do this stuff 30 years ago.

KARMAL · 06-24-2021, 03:16 AM

Got the same letter for my 2021 1LE.

NotFast · 06-30-2021, 11:14 PM

... and my half shaft has been replaced. Pretty painless.

06-09-2021, 11:48 AM	#1
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	Recall - Improperly heat treated half-shaft on my 2021 LT1 Just got a letter from GM that states my left half shaft was likely not properly heat treated and it needs to be replaced. Interesting that it's only the one (their "left shaft machine" wasn't working that day?). Anyone else see this letter yet?

06-09-2021, 01:06 PM	#2
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,594 View My Garage	Our half shafts are asymmetrical, so it makes sense if only the left one is subject to this recall. Good luck __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

06-16-2021, 06:18 PM	#9
ABM1SSSG3 Drives: 2017 Arctic Blue Metallic A8 SS Join Date: Mar 2017 Location: Mission Viejo SoCal Posts: 78	I wonder if someone actually broke an axle and they're doing this to avoid warranty claims for all the damage a broken axle would cause.[/QUOTE] They haven't been as concerned about the same potential damage when the half shaft bolts/retainers have backed out. There is a TSB, but they will not cover this under warranty unless it scatters all over the street. __________________ 2017 SS Arctic Blue Metallic A8 GM big brake kit SG3 Lowering & FE4 sway Bar Kits

06-09-2021, 02:39 PM	#3
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	Thanks! It's being inspected next Tuesday & I'll update this thread. I'm also curious how many other 6-ers here have the same possible issue.

06-15-2021, 09:20 AM	#4
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	And... my car is affected. The Chevy dealer does not know when parts will become available, so I'm just going to keep driving it like normal for now.

06-15-2021, 02:38 PM	#5
4 Low Drives: 2021 Camaro SS Join Date: Feb 2021 Location: Interlochen, MI Posts: 14	I got the same "love" letter in the mail yesterday for my '21 SS.

06-15-2021, 08:28 PM	#6
cmitchell17 Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016 Location: US Posts: 1,201	I am wondering why this is a safety issue and therefore a recall?

06-15-2021, 09:47 PM	#7
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	Honestly, my letter did not use 'recall' at all. The language was pretty vague. My service advisor wasn't real worried about when the parts arrive & made it sound more like the heat treatment was more for corrosion purposes.

06-16-2021, 05:49 PM	#8
MR2Aaron Drives: 2021 Camaro 1SS, 2012 Scion iQ Join Date: Jan 2021 Location: TX Posts: 84	I got the same notice about my 2021 SS - it doesn't say it's a recall (which usually has the connotation that "the government is making us do this"), so it appears to be voluntary. I wonder if someone actually broke an axle and they're doing this to avoid warranty claims for all the damage a broken axle would cause.

06-24-2021, 03:16 AM	#13
KARMAL Drives: 2021 Chevrolet Camaro SS 1LE Join Date: Dec 2020 Location: California Posts: 21	Got the same letter for my 2021 1LE.

06-30-2021, 11:14 PM	#14
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	... and my half shaft has been replaced. Pretty painless.

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