Buy 2021 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD Base Extended Cab Pickup Fleetside Steering - OEM Gmc Part # 19153392 (19435541, 31028265)

Steering Idler Arm.
3 Groove. A standalone Steering Idler Arm without an integrated bracket, which uses a standalone bracket.

Steering Idler Arm

3/4 & 1 TON. 3/4 TON. SEDAN, 3/4 TON. Silverado, Sierra. Suburban 3500HD. Yukon XL, Suburban.
Steering Idler Arm - Repair or Replace
If you’re noticing excessive play or slop in your steering wheel, or if your 2021 GMC Sierra 2500 HD drifts or pulls to the side of the road, you may need to have the idler arm replaced.