Sierra 3500 2WD V8-6.0L VIN U (2004)
Power Steering Fluid: Fluid Type Specifications
POWER STEERING SYSTEM
GM Power Steering Fluid GM P/N 89021184 (Canadian P/N 89021186) or equivalent
POWER STEERING SYSTEM (PHT)
Power Steering Fluid GM P/N 88901975 (Canadian P/N 88901976)