GM has decided it will ship certain 2023 GMC Sierra HD units to dealerships without hood insulation due to ongoing supplier restrictions..
GM began producing certain examples of the 2023 GMC Sierra HD without hood insulation on June 1st, 2022. This feature is typically standard across all Sierra HD trim levels except for the base Pro trim.
Like other GM vehicles affected by the hood insulation shortage, all 2023 GMC Sierra HD units affected by this change are indicated as such by a window sticker with the associated component RPO code R8V. It’s unclear at this time if customers will receive a credit for purchasing a vehicle affected by this constraint, however GM already has a plan in place to retrofit affected vehicles at a later, yet-to-be-disclosed date. Vehicles will be retrofitted by technicians at official GM dealerships only.
The current GMC Sierra HD lineup continues largely unchanged for 2023 over the preceding model year, as GM has plans to introduce a refreshed version of the full-size heavy-duty truck for the 2024 model year. It continues with the same two engine options: the naturally aspirated 6.6L V8 L8T gasoline engine, rated at 401 horsepower at 5,200 rpm and 464 pound-feet of torque at 4,000 rpm, and the 6.6L V8 L5P turbodiesel Duramax engine, rated at 445 horsepower at 2,800 rpm and 910 pound-feet of torque at 1,600 rpm.
In addition, the 2023 GMC Sierra HD has also received a price increase. As we reported previously, the truck now starts at $44,770 for the entry-level 2500HD in the Pro trim with rear-wheel-drive and the 6.6L L8T V8 engine. Production of the full-size truck takes place alongside the Silverado HD at the GM Flint plant in Michigan.