6. Then replace the
pressure cap. Be sure
the pressure cap is
hand-tight and
fully seated.
Engine Fan Noise
Your vehicle has a clutched engine cooling fan. When
the clutch is engaged, the fan spins faster to provide
more air to cool the engine. In most everyday driving
conditions, the fan is spinning slower and the clutch is
not fully engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer
towing and/or high outside temperatures, the fan
speed increases as the clutch more fully engages.
So you may hear an increase in fan noise. This
is normal and should not be mistaken as the
transmission slipping or making extra shifts. It is
merely the cooling
system functioning properly. The fan will slow
down when additional cooling is not required and the
clutch disengages.
You may also hear this fan noise when you start
the engine. It will go away as the fan clutch
partially disengages.
Power Steering Fluid
8100 V8 Engine
5-46
Summary of Contents for Silverado 2004
Page 5: ...These are some examples of symbols that may be found on the vehicle v ...
Page 80: ...United States without Passenger Sensing System Canada with Passenger Sensing System 1 74 ...
Page 92: ... NOTES 1 86 ...
Page 167: ... NOTES 3 3 ...
Page 168: ...Instrument Panel Overview 3 4 ...
Page 202: ...Canada with Passenger Sensing System Canada without Passenger Sensing System 3 38 ...
Page 414: ...When you lift up the hood on the VORTEC 8100 V8 engine you will see the following 5 18 ...
Page 490: ...Removing the Spare Tire and Tools Regular Cab and Crew Cab Extended Cab 5 94 ...
Page 497: ...Front Position 2WD 1500 Series Front Position All Other Models 5 101 ...
Page 524: ...5 128 ...
Page 532: ... NOTES 5 136 ...
Page 550: ...Engine Drive Belt Routing V6 Engines V8 Engines 6 18 ...