Qrunken  Driving 
Death and injury  associated  with  drinking and driving is 
a  national  tragedy.  It’s the  number one contributor  to 
the  highway  death  toll,  claiming thousands of victims 
every  year. 
Alcohol  affects  four  things  that anyone needs to 
drive  a  vehicle: 
Judgment 
0 Muscular  Coordination 
Vision 
Attentiveness. 
Police  records  show  that  almost half of all  motor 
vehicle-related  deaths  involve alcohol.  In most  cases, 
these  deaths  are  the result  of someone  who  was 
drinking  and  driving.  In recent  years,  more  than 
16,000 annual  motor vehicle-related deaths have been 
associated  with  the  use  of alcohol,  with more  than 
300,000 people  injured.  Many adults 
- by 
some  estimates,  nearly half  the adult 
population 
- choose never  to  drink alcohol, so they 
never drive  after drinking. For persons under 
21, 
it’s against  the  law in every U.S. state to  drink alcohol. 
There are good medical, psychological  and 
developmental reasons  for these  laws. 
The obvious  way to  eliminate the  leading highway 
safety  problem 
is for  people never  to drink  alcohol 
and  then drive.  But  what 
if people do? How much  is 
“too much” 
if someone plans  to drive?  It’s  a lot  less than 
many might think. Although it depends  on each person 
and situation, here is  some general information 
on 
the  problem. 
The  Blood Alcohol Concentration (BAC)  of someone 
who  is drinking depends upon  four things: 
The  amount  of alcohol consumed 
0 The  drinker’s  body  weight 
0 The amount  of food that  is consumed before and 
during drinking 
0 The  length  of time  it has taken the drinker to 
consume the alcohol. 
4-3  
Normal  Maintenance  Replacement  Parts 
Replacement  part  numbers listed in this section are based on  the latest information available  at the time of printing, 
and  are  subject  to  change. 
If a  part listed in this  manual  is not the  same as the  part used in  your vehicle when  it 
was  built,  or 
if you have any questions,  please contact  your GM truck dealer. 
Part  Number 
I Engine Oil Filter 
PF47* 
Positive  Crankcase  Ventilation (PCV)  Valve  CV769C* 
I Spark  Plugs 
41 -932* 
I Fuel  Filter 
GF481* 
Wiper Blades  (Front) 
Type 
Length  Trico 221 101 58 
18  inches (45.7  cm) 
Wiper  Blades  (Rear) 
Type 
Length  Trico 22 1 54396 
14 inches  (35.5 cm) 
5-1 01