Buy OEM General Motors Part # 84054399 (19211081). Power Steering Reservoir. 6.0 LITER. Power Steering Pump Reservoir - Repair or Replace If the steering in your

Reservoir Kit - Power Steering Fluid.
Power Steering Reservoir. Included with: P/S pump.

Power Steering Reservoir

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

6.0 LITER.
Power Steering Pump Reservoir - Repair or Replace
If the steering in your whines or groans, or if your steering wheel is hard to turn, you may have a failed power steering pump.