
Winter  Driving 
Here  are  some  tips  for winter driving: 
0 Have  your  vehicle in good shape  for  winter. Be sure  your  engine 
coolant  mix is correct. 
You may  want to put winter  emergency  supplies  in your  vehicle. 
Include  an ice  scraper,  a  small brush or broom,  a  supply  of windshield 
washer  fluid,  a  rag,  some  winter outer  clothing,  a  small  shovel, 
a flashlight, 
a  red  cloth,  and a  couple  of reflective  warning triangles.  And, if you  will  be 
driving  under  severe  conditions,  include  a  small  bag 
of sand,  a  piece of old 
carpet  or a  couple 
of burlap bags  to help  provide  traction. Be sure  you 
properly  secure 
these items  in your vehicle. 
Driving on Snow  or Ice 
Most of the  time,  those  places where  your  tires meet  the road probably  have 
good traction. 
However,  if there  is snow 
or ice  between  your  tires and the  road,  you can 
have  a  very  slippery  situation. You’ll have  a  lot  less  traction 
or “grip” and 
will  need  to  be  very careful. 
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be 
What’s 
the worst time for  this? “Wet  ice.” Very  cold snow  or ice  can 
slick and hard  to  drive 
on. But  wet ice can  be even  more trouble  because it 
may offer the least traction  of all.  You  can get “wet ice”  when  it’s about 
freezing 
(32°F; OOC) and freezing  rain begins to fall.  Try to avoid  driving 
on  wet  ice until  salt and sand  crews can get there. 
Whatever  the condition 
- smooth ice, packed, blowing  or loose snow - 
drive with caution. 
Accelerate  gently. Try  not  to break the  fragile traction. 
If you accelerate too 
fast, the  drive wheels will spin and polish the  surface under the tires  even 
more. 
Your  anti-lock  brakes improve your ability 
to make a hard  stop on a 
slippery road. Even though you have  an  anti-lock  braking system, you’ll 
want  to begin  stopping  sooner  than you would  on dry pavement.  See 
“Anti-Lock” 
in the  Index. 
Allow  greater  following  distance on any slippery road. 
Watch for slippery  spots.  The  road might  be  fine until  you  hit a spot 
that’s covered with ice. 
On an  otherwise  clear  road,  ice patches may 
appear  in shaded  areas where the  sun  can’t reach: around  clumps of 
trees, behind buildings,  or under bridges.  Sometimes the surface 
of a 
curve  or an overpass  may remain  icy  when  the  surrounding roads are 
clear.  If 
you see a patch of ice  ahe.ad of you, brake  before you are  on it. 
Try not  to brake while  you’re actually  on the ice, and avoid sudden 
steering  maneuvers. 
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Loading Your Vehicle 
- 
DSI/KPA (COL3) 
The Certification/Tire  label is found on the rear  edge of the  driver’s  door or 
in the Incomplete  Vehicle Document  in the cab. 
The  label  shows  the size  of your  original tires and the inflation pressures 
needed  to obtain 
the gross  weight  capacity of your vehicle.  This is called the 
GVWR  (Gross  Vehicle Weight Rating).  The 
GVWR includes  the  weight of 
the vehicle,  all  occupants,  fuel  and  cargo. 
The  CertificatiodTire  label also  tells  you the maximum  weights for  the 
front and  rear  axles,  called  Gross  Axle Weight Rating (GAWR). 
To find out 
the actual  loads 
on your front  and rear  axles,  you need  to go  to  a weigh 
station and weigh your vehicle.  Your dealer  can  help 
you with this. Be sure 
to spread  out your load  equally on both  sides  of the centerline. 
Never  exceed  the GVWR  for your  vehicle,  or the  GAWR  for either  the front 
or  rear  axle. 
And, 
if you  do have  a  heavy load, you should  spread it out. 
A CAUTION-: 
In  the  case of a sudden  stop or  collision,  things  carried  in the  bed 
of  your  truck  could  shift  forward  and  come  into  the  passenger \
 area,  injuring  you  and 
others. If you  put  things  in  the bed of 
your  truck,  you 
should make  sure  they  are  properly  secured. 
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Total  Weight  on  Your  Vehicle’s  Tires 
Be sure your vehicle‘s tires are inflated to the limit for cold tires.  You’ll find 
these numbers  on the  Certification  label  at the rear 
edge of  the  driver’s  door 
or  see  “Tire Loading“ 
in the Index. Then  be sure  you don‘t go over  the 
GVW limit for your  vehicle,  includins  the weight of the  trailer  tongue. 
Hitches 
It’s  important to have  the correct  hitch equipment.  Crosswinds,  large trucks 
going  by, and rough roads are 
a few reasons why you’ll  need  the  right  hitch. 
Here  are  some  rules to follow: 
e 
e 
If you use a step bumper hitch,  and your trailer tongue has a V-shaped 
foot.  your  bumper  could be damaged 
in sharp  turns. Check the distance 
from the front  edge 
of the foot  to the  middle  of  the hitch ball socket. If 
the distance  is less  than 12 inches, take  the foot  off the trailer tongue. 
If  you‘ll  be pulling  a  trailer  that, when  loaded, 
will weigh  more  than 
4,000  pounds 
( 1 8 14 kg)  be sure  to use  a properly  mounted, 
weight-distributing  hitch and sway control 
of the  proper  size.  This 
equipment  is very  important  for  proper  vehicle loading and good 
handling  when you’re  driving. 
Safety  Chains 
You should  always  attach chains  between  your vehicle and your trailer. 
Cross  the safety  chains under the tongue 
of the trailer so that the tongue will 
not drop  to  the road if it becomes  separated from the hitch.  Instructions 
about  safety  chains  may be provided  by the hitch manufacturer  or by  the 
trailer  manufacturer. Follow  the manufacturer’s  recommendation  for 
attaching  safety chains  and do not  attach them to  the bumper. Always  leave 
just  enough  slack 
so you can turn with your rig.  And, never allow  safety 
chains  to  drag  on  the ground. 
Trailer  Brakes 
If your  trailer weighs  more than 1,000 pounds  (450 kg) loaded,  then it needs 
its own  brakes 
- and they must be adequate.  Be  sure to read and follow  the 
instructions  for  the trailer brakes 
so you’ll be able to install.  adjust and 
maintain them  properly. 
Your  trailer  brake  system can tap  into your  vehicle’s  hydraulic brake system, 
but  consider  the following: 
Don’t tap  into your vehicle’s brake  system if the trailer’s  brake  system 
will  use more  than 0.02  cubic  inch (0.3~~) 
of fluid from  your vehicle’s 
master cylinder. 
Tf it does,  both braking  systems won’t work well. You 
could even lose your brakes. 
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Will the  trailer  brake  parts  take 3,000 psi (20 650 Wa)  of Ijressure?  If 
not,  the  trailer  brake  system  must  not  be  used with your vehicle. 
Driving  with a Trailer 
Towing  a trailer  requires  a certain  amount  of experience.  Before  setting  out 
for  the  open  road,  you’ll  want to  get  to  know  your  rig. Acquaint  yourself 
with  the  feel  of handling  and  braking  with the added  weight  of the  trailer. 
And  always  keep  in  mind that  the  vehicle  you 
are driving is now a good 
deal  longer  and  not nearly as  responsive  as your  vehicle  is  by itself. 
Before  you start,  check  the  trailer  hitch  and platform  (and attachments), 
safety  chains,  electrical  connector,  lamps,  tires  and mirror  adjustment.  If the 
trailer  has  electric  brakes,  start  your  vehicle  and  trailer  moving and  then 
apply  the  trailer  brake  controller  by hand  to  be  sure  the  brakes 
are working. 
‘This  lets  you  check  your  electrical  connection  at  the  same \
 time. 
During  your  trip,  check  occasionally  to  be sure  that  the  load  is secure,  and 
that  the  lamps  and  any trailer  brakes 
are still  working. 
Following  Distance 
Stay  at  least  twice  as far  behind  the  vehicle  ahead  as  you would when 
driving  your  vehicle  without  a trailer. 
This can  help you avoid  situations  that 
require  heavy  braking  and  sudden  turns. 
Passing 
You’ll  need more  passing  distance  up ahead  when you’re  towing  a trailer. 
And,  because  you’re  a good  deal  longer,  you’ll  need to  go  much  farther 
beyond  the  passed  vehicle  before  you can  return  to  your  lane. 
. 
Backing Up 
Hold  the  bottom of the steering  wheel with one hand.  Then,  to  move  the 
trailer  to  the  left,  just  move  that  hand to  the  left. 
To move  the  trailer  to  the 
right,  move  your  hand  to  the  right.  Always  back 
up slowly and, if possible, 
have  someone  guide  you. 
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To wing Your Vehicle 
Try to have  your GM dealer or a professional  towing  service tow your 
vehicle. They  can  provide the right equipment  and know how to tow 
it 
without  damage. 
If  your  vehicle has been changed  since 
it was  factory-new.  by  adding such 
things  like  fog  lamps,  aero  skirting, 
or special tires and  wheels, these things 
could  be damaged  during  towing. 
Before  you do anything, 
turn on the hazard  warning  flashers. 
When you  call, tell the towing  service: 
0 That  your  vehicle  has  rear-wheel drive,  or that it has the four-wheel 
drive  option. 
The  make,  model, and year  of your vehicle. 
0 Whether you can  move the shift lever for the transmission  and transfer 
case, 
if you  have  one. 
If there was  an accident.  what was damaged. 
A CAUTION: 
To help  avoid  injury  to you  or others: 
Never  let  passengers ride  in a vehicle  that is  being  towed. 
0 Never  tow  faster  than  safe or posted  speeds. 
0 Never  tow  with  damaged parts not fuIly  secured. 
0 Never  get  under your vehicle  after  it has been  lifted  by the 
tow  truck. 
0 Always  use  separate safety chains on  each  side  when  towing  a 
vehicle. 
0 For  pickups  (except cab chassis  models),  use  T-hooks  on front 
. of vehicle,  J-hooks  on rear. 
For  cab  chassis  models,  use  J-hooks  on  front  and rear of 
vehicle. 
When  your  vehicle is being towed, have the ignition  key off. The  steering 
wheel  should  be clamped 
in a straight-ahead  position, with a clamping 
device  designed  for  towing, service. 
Do not use  the vehicle’s  steering 
column  lock for  this.  The  transmission  and  transfer  case, if 
you have one, 
should  be 
in NEUTRAL (N) and the parking brake  released. 
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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 every  day 
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  partially 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,  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. 
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Jack  and Jacking  Tool  Storage - Chassis  Cab  Models 
a -1 
Jacking  Tool  Storage - Chassis  Cab  Models 
a -1 
3 
3 
1. Nut 
2. Jack  Handle Extension 
3. Wheel  Wrench 
4. Jack  and  Tool Storage  Box 
5. Ratchet 
6. Jack  Handle 
7. Tool Retainer 
8, Jack 
To Remove  the  Spare  Tire 
The  spare  tire, if you have one, is full size like the other  tires on your 
vehicle. 
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