According to a recent service update, GM has identified a potential issue affecting the 2024 Chevy Silverado HD in which the engine block heater cord may not be fully seated, along with instructions for a fix to be carried out at Chevy dealerships.
The incorrectly seated engine block heater cord only affects 2024 Chevy Silverado HD trucks equipped with the 6.6L V8 L5P turbodiesel Duramax engine, rated at 470 horsepower and 975 pound-feet of torque, per GM service update number N232433290. The issue also affects 2024 GMC Sierra HD units.
Dealerships are instructed to apply the fix both to Chevy Silverado HD trucks currently in their inventory and to affected pickups brought in for service by their owners. As usual, the service personnel are advised to confirm the vehicle is involved by checking its Investigate Vehicle History screen in the GM Global Warranty Management system before starting to remedy the issue.
No replacement parts are needed to carry out the fix, since the engine block heater cord is not defective but may need to be properly seated. If an inspect reveals that the cord isn’t fully seated, the dealer should reinstall it and its retention clip correctly. This will require removing the truck’s right front wheel.
Dielectric grease, which keeps moisture out of electrical components, is applied to the cord before reinstallation. The fix is available until the pickup’s New Vehicle Limited Warranty ends.
As a reminder, the diesel engine of the affected Chevy Silverado HD trucks is one of two available powerplants offered on the pickup’s 2024 model year. The other, which is not affected by this issue, is the naturally aspirated 6.6L V8 L8T gasoline engine developing 401 horsepower and 464 pound-feet of torque and equipped as standard. Both engines use the Allison-branded 10-speed automatic for cog swaps.
Under the skin, the Chevy Silverado HD rides on a more-capable variant of the GM T1 platform, which it shares with its corporate platform-mate, the 2024 GMC Sierra HD. Production takes place at the GM Flint plant in Michigan and at the GM Oshawa plant in Canada.
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Comments
GM needs to worry more about fixing the transmission issues in their Silverados. I have a 2021 and have been waiting on a 8 speed transmission for 6 months now. I have had a special order request in and I still have no answers. So much for getting “warranty” work done and calling GM gets me no where.
Sad, GM used to know how to build good engines and transmissions.
Unike 95% of ongoing issues this truly would seem to be UAW engine assembly personel . Just push it straight in ’til it stops.
” THAT’S WHAT SHE SAID ! “
I have a 2022 Duramax, I plugged the blocker in last winner. And and a few minutes later I heard something on fire and it was my blockheater. I put it out with a fire extinguisir. It took a month for Chevy to do their investigation. All I was told is they are going to replace the block heater and no other information as why the fire started. The lady on the phone told me Chevy does not release their findings on investigations. So yes i’m driving A truck That was on Fire for some reason that I don’t know.