Buy 2008 Gmc Sierra 2500 HD WT Extended Cab Pickup 6.0L Vortec V8 A/T RWD Power Steering Pump. 1 Ton; 6 - OEM Gmc Part # 84996211 (20756715)

Pump Assembly - Power Steering.
Hydraulic Brakes. Power Steering Pump.

Power Steering Pump

1 Ton; 6.0L. 1/2 Ton; Silverado, Sierra; w/Crew Cab. 2 WHEEL DRIVE, 3/4, 1 ton. 2 WHEEL DRIVE, 3/4, 1 ton, 6.0 liter. 2500 SERIES. 2500 SERIES, 6.0L. 3/4 & 1 TON, 6.0 liter. 3/4 TON. 3/4 Ton; 6.0L. 4 WHEEL DRIVE, 3/4, 1 ton. 4 WHEEL DRIVE, 3/4, 1 ton, 6.0 liter. SEDAN, 3/4 TON. Suburban 3500HD. Yukon XL, Suburban; 2500 Series.
Power Steering Pump - Repair or Replace
If the steering in your 2008 GMC Sierra 2500 HD whines or groans, or if your steering wheel is hard to turn, you may have a failed power steering pump.