There is good news and bad news about this. The bad news is that the step lights are not yet available due to constraints in the supply train.
The good news is that, once those constraints have been removed, the step lights will be suitable for almost every new GMC Sierra 1500. This would not have been the case during the 2019 model year, when the GMC MultiPro tailgate was introduced in a limited number of trim levels.
It would have been more the case, but not to the present extent, in the 2020 model year, when the tailgate was supplied as standard on the SLT, AT4 and Denali trim levels, as an option on the Crew Cab version of the Elevation and not at all on the entry-level Sierra and SLE.
But that was then and this is now. The GMC MultiPro tailgate is now standard on nearly every model in the Sierra 1500 line-up, and is a $595 option on the base Sierra. This increasing availability is no doubt due to the popularity of the innovative six-way configurable tailgate, which is also offered under the Multi-Flex name on the Chevrolet Silverado and will be standard fitment on yet another GM pickup truck, the upcoming all-electric GMC Hummer EV, which will go on sale in Edition 1 form in the fall of 2021.
The step lights appear in the Sierra 1500’s configurator on GMC’s website, but we emphasize once again that they are not yet available to ship. When this changes, they will cost $200.