5-20
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.
If a Tire Goes Flat
It’s unusual for a tire to “blow out” while you’re driving,
especially if you maintain your tires properly. If air goes
out of a tire, it’s much more likely to leak out slowly.
But if you should ever have a “blowout,” here are a few
tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use in a
skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop
--
well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.
Summary of Contents for SIERRA 2002
Page 1: ......
Page 6: ...v These are some examples of vehicle symbols you may find on your vehicle ...
Page 19: ...1 12 Take the simplest vehicle Suppose it s just a seat on wheels Put someone on it ...
Page 81: ...1 74 NOTES ...
Page 175: ...2 94 The Instrument Panel Your Information System ...
Page 355: ...5 28 Front Position 2WD 1500 Series Front Position All Other Models ...
Page 358: ...5 31 Front Position 2WD 1500 Series Front Position All Other Models ...
Page 367: ...5 40 NOTES ...
Page 406: ...6 39 Power Steering Fluid 8100 V8 Engine All Other Engines ...
Page 442: ...6 75 GM Vehicle Care Appearance Materials ...
Page 449: ...6 82 ...
Page 464: ...Scheduled Maintenance 7 7 ...
Page 465: ...Scheduled Maintenance 7 8 ...
Page 487: ...7 30 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED ...