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5. 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.
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Содержание 2004 Avalanche
Страница 5: ...These are some examples of symbols that may be found on the vehicle v ...
Страница 6: ... NOTES vi ...
Страница 17: ...Put someone on it Get it up to speed Then stop the vehicle The rider doesn t stop 1 11 ...
Страница 169: ... NOTES 3 3 ...
Страница 170: ...Instrument Panel Overview 3 4 ...
Страница 200: ...Instrument Panel Cluster United States 2500 series shown 1500 series and Canada similar 3 34 ...
Страница 284: ... NOTES 3 118 ...
Страница 378: ...Engine Compartment Overview When you open the hood on the VORTEC 5300 V8 engine you will see the following 5 12 ...
Страница 380: ...When you open the hood on the VORTEC 8100 V8 engine you will see the following 5 14 ...
Страница 490: ...5 124 ...
Страница 496: ... NOTES 5 130 ...
Страница 512: ...Engine Drive Belt Routing A Air Conditioning Compressor 6 16 ...
Страница 514: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 18 ...
Страница 515: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 19 ...
Страница 516: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 20 ...