Anyone else get a notice about a defective left half shaft?

MR2Aaron · 06-16-2021, 04:48 PM

I got a letter in the mail earlier this week from GM saying that the left (not the right!) half shaft in my 2021 Camaro may have been incorrectly heat treated when it was manufactured, and that if this is the case, I'm supposed to have the dealership replace it. I assume the dealer techs must have a way of inspecting the part in question, but the letter doesn't say how they'd know if my axle is affected.

I did what the letter said, and made an appointment for next week to have the dealership near my office look at it, but the girl on the phone hadn't heard about it, and couldn't tell me what to expect that day.

Anyone else seen this, or already had it dealt with? Did they actually replace your axle?

LT1ornothing · 06-16-2021, 05:02 PM

Have not received any notification as of yet for my 2020 LT1, thanks for letting us know.

NotFast · 06-16-2021, 05:27 PM

I posted it in the correct subforum

CamaroSSStlfan · 06-16-2021, 09:07 PM

I got a 2016 and nothing. No way i'd let the dealers work on my out of warranty SS. I'd take it to Stingray in Plant City if I had to.

dpevans · 06-17-2021, 01:42 AM

My guess is they found a defect have traced it back to a specific manufacturing lot of half shafts and are only recalling those within the group. Lot tracing is crazy detailed in documentation.

LT4Greg · 06-17-2021, 06:26 AM

Get it checked and possibly replaced since your Camaro still has warranty.

Martinjlm · 06-17-2021, 06:59 AM

Quote:

Originally Posted by dpevans

My guess is they found a defect have traced it back to a specific manufacturing lot of half shafts and are only recalling those within the group. Lot tracing is crazy detailed in documentation.

^^^ This

Quote:

Originally Posted by LT4Greg

Get it checked and possibly replaced since your Camaro still has warranty.

^^^ and this

WhiteMale · 06-17-2021, 07:26 AM

They're assymetric so there is a L and a R shaft, probably marked with a lot number or other tell tale sign for visual inspection. Its curious that "may" is used...if we knew what to look for it'd be easy

craigss50 · 06-18-2021, 08:00 PM

Oh lord not again. My 2004 Corvette had both half shafts replaced and half shaft seals twice.

MR2Aaron · 06-20-2021, 02:03 PM

Quote:

Originally Posted by craigss50

Oh lord not again. My 2004 Corvette had both half shafts replaced and half shaft seals twice.

It seems like this is probably related to a specific batch of parts from the supplier that affected a small number of 2021 models that were built during a specific time period. The door jamb sticker on my car says it was built in November of 2020, so if your car is from well prior to that, I suspect you're probably not affected.

pzoom · 06-20-2021, 07:28 PM

I got the notice a few days ago. I’m taking it in next week for an oil change so I’ll see what they say.

donniedarko · 06-21-2021, 01:55 AM

My 21’ LT1 fortunately doesnt come on the online recall/TSB, and haven’t been mailed any notice.

For reference, car build was 1/21.

NotFast · 06-22-2021, 05:43 PM

And... the parts are in, but I won't be able to get the car in until next week.

I can't imagine I need to update this thread again as this is pretty simple issue and solution.

khcoaching · 06-22-2021, 05:58 PM

My car is at the dealer for this now. They initially said a few hours.....now it is a few days as they say they have to drop the rear subframe!

06-16-2021, 04:48 PM	#1
MR2Aaron Drives: 2021 Camaro 1SS, 2012 Scion iQ Join Date: Jan 2021 Location: TX Posts: 84	Anyone else get a notice about a defective left half shaft? I got a letter in the mail earlier this week from GM saying that the left (not the right!) half shaft in my 2021 Camaro may have been incorrectly heat treated when it was manufactured, and that if this is the case, I'm supposed to have the dealership replace it. I assume the dealer techs must have a way of inspecting the part in question, but the letter doesn't say how they'd know if my axle is affected. I did what the letter said, and made an appointment for next week to have the dealership near my office look at it, but the girl on the phone hadn't heard about it, and couldn't tell me what to expect that day. Anyone else seen this, or already had it dealt with? Did they actually replace your axle?

06-17-2021, 06:26 AM	#6
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	Get it checked and possibly replaced since your Camaro still has warranty. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

06-16-2021, 05:02 PM	#2
LT1ornothing Drives: 2020 LT1 M6 Join Date: Jan 2016 Location: South, the DEEP south Posts: 1,114	Have not received any notification as of yet for my 2020 LT1, thanks for letting us know.

06-16-2021, 05:27 PM	#3
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	I posted it in the correct subforum

06-16-2021, 09:07 PM	#4
CamaroSSStlfan Account Suspended Drives: 2016 Camaro 2SS Join Date: Sep 2020 Location: FL Posts: 1,129	I got a 2016 and nothing. No way i'd let the dealers work on my out of warranty SS. I'd take it to Stingray in Plant City if I had to.

06-17-2021, 01:42 AM	#5
dpevans Drives: 2024 Riverside Blue 2SS 1LE Join Date: Mar 2016 Location: Fort Wayne, IN Posts: 1,208	My guess is they found a defect have traced it back to a specific manufacturing lot of half shafts and are only recalling those within the group. Lot tracing is crazy detailed in documentation.

06-17-2021, 07:26 AM	#8
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,988	They're assymetric so there is a L and a R shaft, probably marked with a lot number or other tell tale sign for visual inspection. Its curious that "may" is used...if we knew what to look for it'd be easy

06-18-2021, 08:00 PM	#9
craigss50 Drives: 2017 Camaro SS Fifty Join Date: Oct 2016 Location: Port St Lucie, Florida Posts: 966	Oh lord not again. My 2004 Corvette had both half shafts replaced and half shaft seals twice.

06-20-2021, 07:28 PM	#11
pzoom Drives: 2021 SS 1LE SHOCK Join Date: Mar 2021 Location: Austin Posts: 124	I got the notice a few days ago. I’m taking it in next week for an oil change so I’ll see what they say.

06-21-2021, 01:55 AM	#12
donniedarko Drives: 2021 LT1 A10 RS Join Date: Feb 2021 Location: Los Angeles Posts: 105	My 21’ LT1 fortunately doesnt come on the online recall/TSB, and haven’t been mailed any notice. For reference, car build was 1/21.

06-22-2021, 05:43 PM	#13
NotFast Drives: 2021 LT1 Join Date: Aug 2020 Location: Chicago area Posts: 286	And... the parts are in, but I won't be able to get the car in until next week. I can't imagine I need to update this thread again as this is pretty simple issue and solution.

06-22-2021, 05:58 PM	#14
khcoaching Drives: 2021 1SS 1LE Join Date: Nov 2020 Location: 98548 Posts: 612	My car is at the dealer for this now. They initially said a few hours.....now it is a few days as they say they have to drop the rear subframe!

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