The 2023 GMC Sierra 1500 is the fifth model year of the current fourth-generation pickup nameplate, ushering in only a few small changes and updates as compared to the fully refreshed 2022 model year. Now, however, GM Authority has learned that some parking assist features are currently under constraint for the 2023 GMC Sierra 1500.
According to GM Authority sources, some units of the 2023 GMC Sierra 1500 that would normally be equipped with Rear Park Assist (RPO code UD7) and Front and Rear Park Assist (RPO code UD5) will not include these features.
Normally, Rear Park Assist is available for the 2023 GMC Sierra 1500 Pro trim level in conjunction with the 1SA Safety Package (RPO code PQA), while SLE and Elevation trims normally offer the feature in conjunction with the Sierra Safety Plus Package (RPO code PED).
Meanwhile, Front and Rear Park Assist is normally available for the 2023 GMC Sierra SLT in conjunction with the Sierra Safety Plus Package (RPO code PED), and included as standard for AT4, AT4X, Denali, and Denali Ultimate trim levels. To note, 2023 GMC Sierra AT4X, Denali, and Denali Ultimate trim levels are unaffected by this constraint.
It’s also worth noting that the 2022 GMC Sierra 1500 is also affected by constraints for these two parking assist features. The difference is that while 2023 GMC Sierra 1500 AT4X, Denali, and Denali Ultimate trims are not affected by this constraint, the 2022 model-year Sierra AT4X, Denali, and Denali Ultimate trim levels are affected.
One of the big updates for the 2023 GMC Sierra 1500 is the introduction of the new 3.0L I6 LZ0 turbodiesel Duramax engine to the powertrain lineup. The new LZ0 engine will replace the 3.0L I6 LM2 engine option, and offer the same specs. The LZ0 is considered the “second iteration” of the Duramax 3.0L six-cylinder engine, with the LM2 being the first.
As a reminder, the 2023 GMC Sierra 1500 offers four engine options total, which, in addition to the new turbodiesel six-cylinder already mentioned, also includes 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. Under the skin is the GM T1 platform, while production takes place at the GM Silao plant in Mexico and the GM Fort Wayne plant in Indiana.