A potential problem with the engine block heating cord not being fully seated for the 2024 Chevy Silverado HD has been discovered by GM, according to a recent service update. GM has also provided instructions for a fix that should be performed at Chevy dealerships.
According to GM service update number N232433290, the 6.6L V8 L5P turbodiesel Duramax engine, which is rated at 470 horsepower and 975 pound-feet of torque, is the only engine type that is affected by the improperly seated engine block heater cord in 2024 Chevy Silverado HD vehicles. The problem also affects GMC Sierra HD models made in 2024.
Dealerships are directed to implement the remedy on impacted pickups that owners bring in for maintenance as well as Chevy Silverado HD trucks that are presently in stock. As always, before beginning to address the issue, the service staff is encouraged to verify that the vehicle is implicated by examining its Investigate Vehicle History screen in the GM Global Warranty Management system.
The engine block heating cord is not broken; it just needs to be positioned correctly. Therefore, no new parts are required to complete the repair. The dealer should properly reinstall the cord and its retention clip if an inspection finds that it isn’t firmly seated. To do this, the right front wheel of the truck must be removed.
Before reinstalling, the cord is coated with dielectric grease, which prevents moisture from getting into electrical components. Up until the pickup’s New Vehicle Limited Warranty expires, the remedy is available.
Recall that the pickup’s 2024 model year would have two different powerplant options, with the diesel engine of the impacted Chevy Silverado HD pickups being one of them. The other, a normally aspirated 6.6L V8 L8T gasoline engine with standard equipment and 401 horsepower and 464 pound-feet of torque, is unaffected by this problem. For cog changes, both engines employ the 10-speed Allison automatic gearbox.
Under the surface, the Chevy Silverado HD and its corporate platform-mate, the 2024 GMC Sierra HD, share a more capable version of the GM T1 chassis. Both the GM Oshawa facility in Canada and the GM Flint plant in Michigan are sites of production.
