A brand-new 4WD pickup truck sold its capability on every showroom sticker, and the single missing part a supplier left out of the transfer case before delivery that turns the drivetrain into a highway hazard

What nobody mentioned was a part the size of a finger that never made it inside the transfer case before the truck shipped. How a transfer case is supposed to workThe transfer case is the heart of every 4WD system. Without this tube, the transfer case bearings do not receive proper lubrication, which over time can lead to internal bearing failure and sudden wheel lock-up. The list covers 2015 to 2020 Chevrolet Suburban, Tahoe, Cadillac Escalade, GMC Yukon, and Yukon XL, along with 2026 Silverado 1500, Sierra 1500, Tahoe, Suburban, Yukon, Yukon XL, Escalade, and Escalade ESV. Dealerships will inspect the transfer case and replace the entire assembly free of charge.