A new service update from GM includes a very small number of the 2024 GMC Sierra 1500 pickup and the 2024 GMC Yukon SUV that may be affected by a defect in the naturally aspirated 5.3L V8 L84 gasoline engine, potentially leading to a misfire issue.
Service Update Number N242442140 notes that only affected GMC Sierra 1500 and GMC Yukon vehicles currently in dealership inventory or in transit, and not consumer-owned vehicles, are included in the update and will receive a fix for the misfire problem.
Dealers must hold all affected 2024 GMC Sierra and GMC Yukon units currently in their new and unsold dealership inventory until the vehicles can be properly inspected to see if the misfire issue is present. All potentially involved vehicles cannot be sold, delivered to customers, traded to a different dealer, or used for a demonstration.
Inspection involves revving the engine to high RPMs repeatedly while stationary for extended periods and seeing if misfires or rough operation occur, followed by repeated test drives. Sierra and Yukon units that pass the inspection are marked as “Engine Idle and Road Test – Vehicle Passed Inspection (No Further Action Required)” in the GM system and can then be sold, traded, or demonstrated as normal.
Vehicles that fail the inspection must continue to be held until the fix can be applied. Notably, no replacement components are currently available for the remedy.
The issue is caused by engine oil circuit burrs that can cause engine misfires as well as rough operation of the engine. GM will produce the components needed to fix the issue in the near future. Once these parts become available, the automaker will issue a revision to the current Service Update notifying dealerships of the available fix.
While VIN lists of affected 2024 GMC Sierra 1500 and 2024 GMC Yukon units are available, a GM spokesperson confirmed that only 70 units are involved in the service update, including both GMC models as well as the 2024 Chevy Silverado 1500, 2024 Chevy Suburban and 2024 Chevy Tahoe. Fixing those units that fail the inspection must take place before a June 30th, 2025 deadline.
As a reminder, both the GMC Sierra 1500 and the GMC Yukon make use of the GM T1 platform for structure under the body panels. The Sierra is produced at the GM Fort Wayne plant in Indiana and the GM Silao plant in Mexico, while production of the Yukon takes place at the GM Arlington plant in Texas.
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Comments
So, the owners manual recommends that you “avoid exceeding 4000 rpm” during the 500 mile break in period. I don’t think I want one of these trucks if they are “revving the engine to high RPMs repeatedly” to try and see if the engine has a problem.
I have been seriously thinking about buying a new Sierra, but I think I’ll wait awhile.
Agree with you. I’d wait till they hadca fix for this problem.
Another thing really turning me off this site is the constant commercials popping up every 5 seconds that I have to hit skip and then the x in top left corner of said commercial
.this is very annoying and im thinking of un subscribing from this site. Either limit the commercials or im offvthis site.
@Bill C have you never heard of “Ad Blockers” for your browser? I have never seen ads on this site that I need to clear off.
Yes. I use ad blockers but somehow they still sneak them in
Thanks for the tip. And yes I have the dreaded 5.3 in a 22′ Sierra. No problems so far 2 years old. I do hope I have a good one but know the 1% that are having problems. Just seems to be isolated. Parts are mass produced and poor cheaper quality on everything. Sad !
OMG! Here here we go again !!!!
More gm engine garbage
Engine Oil Circuit? The “Circuit ” for oil is internal to the engine block and cylinder heads. Wow, these engineering colleges are really turning out some dimwits. Bet they know all the 47 genders though.
And how does a “burr” produce a misfire?
because a “burr” is caused when it is cold outside. “Burrrr its cold out” and cold weather causes misfire. LOL
And now GM Authority is resetting the “Rate this comment” thumbs up or down numbers to “0” after every time I agree or disagree with the comment. This is just a way foy you not to know how others feel about the comment just posted. why are you doing this ? I want to know what other peoplw think. Very sneaky way to keep you uninformed on others opinion. I guess the “TRUTH” rea;ly does hurt GM reputation. STOP this nonsense. One reason for me reading the coments is to see if I feel positive or negative about the comment. This is reminding me of “FACEBOOK” cops weeding out unwanted comments.. I thought this was a sounding board not a slap on the wrist if you don’t agree with some positive or negative comment.