jacking GMC SONOMA 2002 Owner's Manual

5-17
Engine Fan Noise
This 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 clutch is not engaged. This improves fuel
economy and reduces fan noise. Under heavy vehicle
loading, trailer towing and/or high outside temperatures,
the fan speed increases when the clutch 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 disengages.
If a Tire Goes Flat
It's unusual for a tire to ªblow outº 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 ªblowout,º 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.

5-19 Removing the Spare Tire and Tools
The jacking equipment you'll need is stored inside the
plastic jack cover which is behind the front seats, either
on the center of the wall (extended cab) or on the
passenger's side of the wall (regular cab).
The jacking equipment for the crew cab is located
behind the rear seat back on the passenger's side of
the vehicle.
1. To remove it, turn the plastic wing nut
counterclockwise. Remove the jack cover.
2. Turn the wing nut counterclockwise and remove the
wheel blocks, jack and wheel wrench.Your spare tire is stored underneath the rear of your
vehicle. See ªCompact Spare Tireº later in this section
for more information about the compact spare.
NOTICE:
Never remove or store a tire from/to a storage
position under the vehicle while the vehicle is
supported by a jack. Always tighten the tire
fully against the underside of the vehicle when
storing it.

5-28
5. Make sure the tire is stored securely. Push, pull, and
then try to rotate or turn the tire. If the tire moves,
use the wheel wrench to tighten the cable.
Return the jack, wheel wrench and wheel blocks to the
proper location behind the seat. Secure the items.
A. Wheel Wrench
B. Bracket
C. Jacking Instructions
(Roll and place tag
behind the bracket
after the tools
are installed.)D. Bolt Location
E. Wheel Blocks
F. Nut
G. Rubber Band
H. Jack Position
Put the jack cover back on, if you have one.