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Lifter issue: TSB PIP5776E - published June 18

1500guy
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Firehawk99 Enthusiast

Firehawk99

Posted
Posted
5 minutes ago, bigbulls said:

Sorry it took so long my contact was on vacation. Your engine was built in Spring Hill Tennessee.

 

 

Thanks Firehawk99 I just crawled under and took a picture of my Julian tag and it starts with N and I was going to ask the same question. May 12th 2021 for me and Vin build date is 6/21 so it looks like it's running about 3 weeks to a month difference from engine build to truck build. Thanks again for all your info.

Anytime! Happy to help out.

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CamGTP
CamGTP

In all reality it's not a major repair. Things just have to come apart to reach the lifters.   In total they replace a few gaskets and bolts. Them being 2 head gaskets, head bolt kit, possib

Firehawk99
Firehawk99

The first 7 digits on mine were T221077. Which means T-Tonawanda, 2-2nd shift, 21-2021, 077- the 77th day of the calander year. Which was 3-18-21.

Firehawk99
Firehawk99

Any trucks built after 3-4-21 should be fine. That is the break point.

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jayoco Enthusiast

jayoco

Posted
Posted
5 hours ago, Firehawk99 said:

Sorry it took so long my contact was on vacation. Your engine was built in Spring Hill Tennessee. 

Thank you, Firehawk99!

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Philbert Enthusiast

Philbert

Posted
Posted

Back in the shop, after all lifters and a bent pushrod were replaced I picked it up and started shaking badly at about 40 mph and on light acceleration or when coasting. Was able to get it home, called my local dealer who said no appointments until 9/20 or drop it off and they will get to it when they do. Continued driving it as it wasn't horrible and no check engine light until I started smelling burning oil. Look under the hood and see oil pooling on the the intake manifold dripping down onto the exhaust manifold. Didn't have a choice but to drop it off at the point. Now waiting 5 days as it's a holiday weekend to be looked at without a loaner.  Take as long as you want to repair it, once it reaches a total of 30 days I will get and attorney and proceed with lemon law. GM is useless and their " senior rep" never picks up her phone. Horrible customer service. 

20L8TSierra24 Senior Enthusiast

20L8TSierra24

Posted
Posted
On 8/5/2021 at 3:31 PM, Firehawk99 said:

Any trucks built after 3-4-21 should be fine. That is the break point.

My question is, what changed? Hardware or software? 

Scott W .Kennedy New Member

Scott W .Kennedy

Posted
Posted

I bought my trail boss in March , just over 7000 miles , was told they are going to replace all lifters. They won't send me a copy of the bulletin. Anyone know the exact cause for the lifter failure , they said the springs but I read somewhere it was from bent push rod.

Swerve-n-protect Enthusiast

Swerve-n-protect

Posted
Posted

I have a 2021 Denali w/6.2 that has a truck built date of 02/21.... have 13k miles on it... I haven't noticed any issues yet, should I get the Pulsar sooner rather than later?  thanks!!

SSGUNNER Enthusiast

SSGUNNER

Posted
Posted
On 8/5/2021 at 12:31 PM, Firehawk99 said:

Any trucks built after 3-4-21 should be fine. That is the break point.

 

On 8/5/2021 at 1:26 PM, Firehawk99 said:

I work for GM at the Tonawanda engine plant. We build the 4.3, 5.3, 6.2 and the 6.6.


can you confirm is this the lifter sound of a possible issue?  This is on a 2021 Tahoe with the 5.3

https://youtu.be/4XMoY7Y1e1k

SSGUNNER Enthusiast

SSGUNNER

Posted
Posted
2 hours ago, Firehawk99 said:

It sure sounds like it to me. I would park it and have the dealer come pick it up.

Cool, thanks 🙏🏽 luckily it’s on a vid I pulled from another forum. I asked here because at first to me it sounded like injectors similar to this video at 5:20+

 

  • 1 month later...
Desrunner Enthusiast

Desrunner

Posted
Posted
9 hours ago, Firehawk99 said:

Your engine was built in Canada at the St. Catharines powertrain plant.

Awesome! Thanks for checking on it. Do you know if it’s possible to get an engine build sheet?

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