
Downloaded from www.Manualslib.com manuals search engine As shown in the  chart, SAE 5W-30 is best  for your 
vehicle.  However,  you  can use 
SAE 1OW-30 if it’s  going 
to  be 
0°F (- 18°C)  or above.  These numbers  on an oil 
container show  its viscosity,  or thickness. 
Do not  use 
other  viscosity  oils, such  as 
SAE 20W-50. 7 
NOTICE: 
Use only engine  oil with  the American 
Petroleum  Institute Certified For Gasoline 
Engines “Starburst” symbol. Failure  to use 
the recommended  oil can result  in engine 
damage  not covered  by your  warranty. 
GM  Goodwrench’  oil meets  all the  requirements for 
your  vehicle. 
Engine Oil  Additives 
Don’t  add  anything to your oil. Your GM dealer is  ready 
to advise 
if you  think something should be  added. 
When te Change  Engine Oil 
See if any one  of these is true  for you: 
e 
e 
e 
8 
e 
Most  trips are less than 5 to 10 miles (8 to 16 km). 
This is particularly important  when outside 
temperatures are below freezing. 
Most  trips include extensive idling  (such  as frequent 
driving  in stop-and-go  traffic). 
You  operate  your vehicle  in dusty  areas or off-road 
frequently. 
You  frequently  tow a trailer. 
The vehicle  is used  for delivery  service, police,  taxi 
or  other  commercial application. I 
Driving  under these conditions causes engine  oil  to 
break  down  sooner. 
If any  one  of these  is true  for your 
vehicle,  then  you  need  to change your oil and  filter 
every  3,000  miles 
(5 000 km) or 3 months -- whichever 
occurs  first. 
If  none  of them is true, change the  oil and  filter  every 
7,500 miles (12 500 km) or 12 months -- whichever 
occurs first. Driving a  vehicle  with a fully warmed 
engine  under highway conditions causes engine  oil to 
break  down  slower. 
6-13   

Downloaded from www.Manualslib.com manuals search engine Remote  Oil  Filter (Four-wheel Drive) 
The access  door for  the  remote oil filter  is  in  the  steering 
linkage  shield  assembly  located  under  the  radiator 
support.  Twist  the  screw  to unlock  or lock  the  door. 
What to Do with Used Oil 
Did you know  that  used  engine oil  contains  certain 
elements  that  may be unhealthy  for your  skin  and  could 
even cause cancer?  Don’t let used  oil  stay 
on your  skin 
for  very  long.  Clean  your skin  and  nails  with  soap and 
water,  or a  good  hand  cleaner.  Wash  or properly  throw 
away  clothing  or rags containing  used engine oil. (See 
the  manufacturer’s  warnings  about the  use  and  disposal 
of oil products.) 
Used  oil  can  be a real  threat 
to the environment.  If  you 
change  your  own  oil, be  sure 
to drain  all  free-flowing  oil 
from  the filter  before  disposal.  Don’t ever dispose 
of oil 
by  putting  it  in  the  trash,  pouring  it on the ground,  into 
sewers,  or into streams 
or bodies of water.  Instead, 
recycle  it by  taking  it  to a place  that collects  used 
oil. If 
you  have  a  problem  properly  disposing 
of your  used oil, 
ask your  dealer,  a  service station or a  local  recycling 
center for help. 
Air Cleaner 
“VORTEC” 4300 Engine 
To remove  this air cleaner,  remove the  wing  nuts  that 
hold  the  cover 
on. Remove  the  cover and lift out the 
air filter. 
Insert  a  new  air filter,  then  replace the air cleaner  cover. 
Tighten  the  wing  nuts  to hold the  cover 
in place. 
6-14   

Downloaded from www.Manualslib.com manuals search engine Automatic  Transmission Fluid 
When to Check and Change 
A good  time  to check your automatic  transmission  fluid 
level  is 
when the engine oil is changed. 
Change  both  the  fluid and filter  every 
50,000 miles 
(83 
000 km)  if the  vehicle  is  mainly  driven  under  one or 
more 
of these  conditions: 
In  heavy  city  traffic  where the outside  temperature 
regularly  reaches  90°F (32°C)  or higher. 
0 In  hilly  or mountainous  terrain. 
0 When  doing  frequent trailer towing. 
0 Uses such as found in taxi,  police  or delivery  service. 
If  you  do  not  use  your  vehicle  under  any  of  these 
conditions,  the fluid  and filter  do not  require changing. 
See  “Scheduled  Maintenance Services”  in the  Index. 
How to Check 
Because  this operation  can  be  a little difficult,  you  may 
choose  to  have  this done  at  your 
GM dealer’s Service 
Department.  If  you  do  it  yourself,  be  sure  to  follow  all  the  instructions\
 
here,  or 
you could  get  a false  reading  on  the  dipstick. 
NOTICE: 
Too much  or  too  little  fluid  can  damage  your 
transmission. 
Too much  can  mean  that  some of 
the  fluid  could  come  out  and  fall  on  hot  engine 
parts  or  exhaust  system  parts,  starting  a  fire.  Be 
sure  to  get  an  accurate  reading  if  you  check  your 
transmission  fluid. 
Wait at least  30  minutes  before checking  the 
transmission  fluid  level  if 
you have  been driving: 
When outside temperatures are  above 90°F (32°C). 
0 At high  speed  for quite a while. 
0 In  heavy  traffic -- especially in hot  weather. 
0 While  pulling a trailer. 
To get  the  right  reading, the  fluid  should  be  at  normal 
operating  temperature,  which  is  180°F to 
200°F 
(82°C to 93°C). 
6-16   

Downloaded from www.Manualslib.com manuals search engine 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. 
Engine 
Thermostat 
Oil  Filter 
Air  Cleaner Filter 
PCV  Valve  Automatic  Transmission  Filter Kit 
Spark Plugs 
Fuel  Filter 
Windshield  Wiper  Blades 
2.2L 
10  182377 
PF47 
A1163C 
cv9ooc  24200796 
4  1-928 
GF48 1 
Trico  (20  inched5 
1 cm) 
“VORTEC” 4300 
1255  1472 
PF52 
A1  163C 
CV746C  24200796 
4  1-932 
GF48  1 
Trico 
(20 inched5 1 cm) 
6-67   

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule 
I Short TripKity  Definition 
__~ 
Follow  the  Short  TripKity Maintenance  Schedule if any 
one 
of these conditions  is true for your  vehicle: 
0 Most  trips  are  less  than 5 to 10 miles (8 to 16 km). 
This  is  particularly  important  when  outside 
temperatures  are below  freezing. 
driving 
in stop-and-go  traffic). 
0 Most  trips  include  extensive idling  (such as frequent 
0 You operate  your  vehicle  in  dusty  areas or 
off-road  frequently. 
You frequently  tow  a  trailer. 
If  the  vehicle  is  used  for delivery  service,  police,  taxi 
or  other  commercial  application. 
One of the  reasons you should follow  this sch.edule if 
you operate your vehicle  under any qf these conditions 
is that these conditions 
cause engine oil to break 
down soone): 
Short  TripKity  Intervals 
Every 3,000 Miles (5  000 km): Engine  Oil  and  Filter 
Change  (or 
3 months,  whichever  occurs  first).  Chassis 
Lubrication  (or 
3 months,  whichever  occurs  first).  Drive 
Axle  Service  (or 
3 months,  whichever  occurs  first). 
At 6,000 Miles (10 000 km) -- Then  Every 
12,000 Miles (20 000 km): Tire  Rotation. 
Every 15,000 Miles (25 000 km): Air  Cleaner  Filter 
Inspection, 
if driving in dusty  conditions.  Front 
Wheel  Bearing  Repack 
(2WD only)  (or  at  each brake 
relining,  whichever  occurs  first). 
Every 30,000 Miles (50 000 km): Air Cleaner  Filter 
Replacement. 
Fuel Filter  Replacement. 
Every 50,000 Miles (83 000 km): Automatic 
Transmission  Service  (severe  conditions  only). 
Every 60,000 Miles (100 000 km): Engine  Accessory 
Drive  Belt  Inspection.  Fuel 
Tank, Cap and Lines  Inspection. 
Every 100,000 Miles (166 000 km): Cooling  System 
Service 
(or every 60 months,  whichever  occurs  first). 
Spark  Plug  Wire  Inspection. 
Spark Plug  Replacement. 
Positive  Crankcase  Ventilation  (PCV)  Valve  Inspection. 
These intervals only sumrnurize  maintenance  services. 
Be sure to.follow the complete maintenance  schedule on 
the%following pages. 
7-4   

Downloaded from www.Manualslib.com manuals search engine Maintenance  Schedule 
Follow this maintenance schedule only if none of the 
conditions from  the Short  Trip/City  Maintenance 
Schedule 
is true. 
Driving  a vehicle  with  a fully  warmed  engine under 
highway  conditions  causes engine 
oil to break 
down  slower: 
Every 7,500 Miles  (12 500 km): Engine  Oil  and  Filter 
Change  (or  every  12 months,  whichever  occurs first). 
Chassis  Lubrication  (or every  12  months,  whichever 
occurs first).  Drive  Axle Service. 
At 7,500 Miles  (12 500 km) -- Then  Every 
15,000  Miles  (25 
000 km): Tire  Rotation. 
Every 30,000 Miles (50 000 km): Fuel Filter 
Replacement.  Air Cleaner  Filter Replacement.  Front 
Wheel  Bearing  Repack  (2WD  only)  (or at  each  brake 
relining,  whichever  occurs first). 
Transmission  Service (severe conditions only). 
Drive  Belt  Inspection. 
Fuel Tank,  Cap and 
Lines  Inspection. 
Every  100,000  Miles (166 000 km): Cooling  System 
Service  (or  every 
60 months,  whichever  occurs  first). 
Spark  Plug  Wire  Inspection.  Spark  Plug  Replacement. 
Positive  Crankcase  Ventilation  (PCV)  Valve  Inspection. 
Every 50,000 Miles (83 000 km): Automatic 
Every 60,000 Miles (100 000 km): Engine  Accessory 
These intervals only summarize maintenance  services. 
Be  sure 
to follow the complete maintenance schedule on 
the following pages. 
7-5   

Downloaded from www.Manualslib.com manuals search engine I Short TripKity  Maintenance  Schedule I 
3,000 Miles (5 000 km) 
0 Change engine  oil  and filter (or every 
3 months, whichever occurs first). 
An Emission Control Service. 
0 Lubricate the front suspension, ball  joints, 
steering linkage  and transfer case shift 
linkage, parking brake cable guides, 
propshaft splines, universal joints, brake 
pedal  springs  and clutch pedal springs  at 
every oil change (or every 
3 months, 
whichever occurs first). 
0 Check readfront  axle fluid level and  add 
fluid  as needed. Check constant  velocity 
joints  and axle seals for leaking.** 
6,000 Miles (10 000 km) 
0 Change engine oil  and filter (or every 
3 months, whichever occurs first). 
An Emission Control Service. 
0 Lubricate the front suspension, ball joints, 
steering linkage  and transfer case shift 
linkage, parking brake cable guides, 
propshaft splines, universal  joints, brake 
pedal springs  and clutch  pedal springs  at 
every  oil change (or every 
3 months, 
whichever occurs first). 
Check readfront  axle fluid level  and  add 
fluid 
as needed. Check constant velocity 
joints  and axle seals for lealung. 
** 
(Continued) 
7-7   

Downloaded from www.Manualslib.com manuals search engine I Short TripKity Maintenance  Schedule I 
6,000 Miles (10 000 km) (Continued) 
0 Rotate  tires. See “Tire  Inspection 
and  Rotation”  in  the Index  for proper 
rotation  pattern  and  additional information. 
During  tire  rotation, check brake calipers 
for  freedom  of movement.  Refer  to  the 
appropriate 
GM service  manual  for proper 
caliper service procedures. 
L 
9,000 Miles (15 000 km) 
0 Change  engine oil  and filter  (or every 
3 months,  whichever  occurs first). 
An Emission Control Service. 
Lubricate the front suspension,  ball  joints, 
steering  linkage and  transfer  case shift 
linkage,  parking  brake cable guides, 
propshaft  splines, universal  joints, brake 
pedal  springs  and  clutch pedal  springs  at 
every 
oil change (or every 3 months, 
whichever  occurs  first). 
0 Check readfront  axle fluid level  and  add 
fluid  as  needed.  Check  constant  velocity 
joints  and  axle  seals  for leaking.** 
DATE 
SERVICED BY: ACTUAL  MILEAGE 
7-8