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TSB document for the 6.2L valve spring problem


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Does anyone know where I can download a copy of the official bulletin from GM about the valve spring issue, especially for the 6.2 just in case there are separate ones. I think it would be good to have on hand just in case.

thanks in advance!

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40 minutes ago, kodiakdenali said:

Does anyone know where I can download a copy of the official bulletin from GM about the valve spring issue, especially for the 6.2 just in case there are separate ones. I think it would be good to have on hand just in case.

thanks in advance!

From NHTSA:

https://static.nhtsa.gov/odi/tsbs/2019/MC-10160648-9999.pdf

 

Looking for my paperwork (wife loves "putting stuff away") which will likely have more info

 

TSB is PIP5752A

 

 

22 SEPTEMBER 2020

 

#PIP5752A: Service Engine Light misfire engine noise With DTC P0300 P0106 P0506 - (Sep 22, 2020)

 

Subject: Service Engine Light misfire engine noise With DTC P0300 P0106 P0506

 

Involved Region or Country North America

 

Condition

 

A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506.

 

Cause

 

Possible broken valve spring.

CorrectionDuring inspection if you determine that the engine has a broken valve spring it will be necessary to perform a cylinder leakage test on the affected cylinder.

 

If no cylinder leakage is observed it will be necessary to replace all valve springs on both banks if the vehicle is built between June 1, 2020 to September 15, 2020. Note: This only applies to the 6.2L engines RPOs L87, LT1, LT4 and LT2. For all other engine RPOs L82, L84 and L8T just replace the affected valve spring.

 

If you determine that engine has cylinder leakage it will be necessary to inspect further to determine the extent of the engine damage to determine correct repair required.

 

Important: All valve springs will be requested back for further analysis and inspection.

Edited by Rob Mugs
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  • 1 month later...
On 2/21/2021 at 11:03 AM, bam2880 said:

What dates are the 6.2 motors supposed to be affected?

I'm not sure what the current date range is, it was June 1 2020 through I think mid October, then was revised into September. I'm not aware of any further revisions.

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  • 1 month later...

The farging GARBAGE that GM gets away with selling for premium money. Totally avoidable, just poor vendor quality control, driven by the DESCENDING price scale to suppliers. 
 

Pirate bastidds.

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