2015 NQH/NPO/NQG-LD Model Year Design Change - Addition of a NEW design Propshaft Oil Sleeve
WARNING: This page is about a different car, the 2014 GMC Yukon XL 1500, 2014 GMC Yukon, 2014 Chevrolet Tahoe, and 2014 Chevrolet Suburban 1500. However, it is still accessible from the selected car via links, so may be relevant.
Beginning 2015 model year for light duty applications (NQH, NP0, and NQG-LD), a prop shaft oil seal sleeve (1) with internal O-ring were added to the design. The purpose of the sleeve is to contain and retain grease within the area which is used for lubrication of the propshaft yoke splines and rear output shaft splines. The oil seal sleeve is not to be used on 2014 and earlier applications.