Cognito 11-25 Chevrolet Silverado 2500/3500HD / 11-25 GMC Sierra 2500/3500HD Steering Idler ArmFor model years 20112014 and most of 2015, GM included OEM provisions for a steering stabilizer, requiring two mounting points: one on the right side of the steering center link and one on the left side of the frame. All 2011+ models retain the center link mounting provisiona tapered hole near the idler arm. However, only 20112014 and select 2015 trucks came with the frame side mounting clevis (two welded tabs on the crossmember). This OEM clevis