The start of regular production (SORP) for the light-duty 2023 GMC Sierra 1500 is scheduled to begin on August 29th. Unfortunately, parts constraints will be in effect from the moment production commences, GM Authority has learned.
The multi-position GMC MultiPro tailgate will be under constraint on the 2023 GMC Sierra 1500 in the base Pro level in the Double Cab and Crew Cab configurations from the start of production, although it will remain available to order on the Regular Cab model. Additionally, certain model configurations in the SLE, Elevation and SLT trim levels, which typically come standard with this feature, will instead feature the Standard Tailgate (RPO code QK1). Customers who purchase models affected by this change will receive a cash credit of a yet-to-be-determined value, which will appear on the vehicle’s window sticker.
Availability for the MultiPro tailgate on the AT4, AT4X, Denali and Denali Ultimate trim levels has not changed and will still be offered as standard equipment on these models from the start of production next month.
The 2023 GMC Sierra 1500 sees the introduction of the new 3.0L I6 LZ0 turbodiesel Duramax engine to the powertrain lineup. The new LZ0 engine replaces the 3.0L I6 LM2 engine option and is expected to offer the same performance/output specs with improved emissions and/or fuel economy.
In addition to the aforementioned LZ0 turbodiesel, the GMC Sierra 1500’s powertrain lineup will also include the turbocharged 2.7L I4 L3B gasoline engine, the naturally aspirated 5.3L V8 L84 gasoline engine, and the naturally aspirated 6.2L V8 L87 gasoline engine. The full-size truck rides on the GM T1 platform, with production taking place at the GM Fort Wayne plant in Indiana and GM Silao plant in Mexico.