
After Off-Road Driving 
Remove any brush  or  debris that has collected  on the underbody,  chassis or 
under the  hood.  These  accumulations  can be 
a fire hazard. 
After operation 
in mud  or  sand,  have the brake  linings cleaned  and  checked. 
These  substances  can cause  glazing  and uneven braking. Check the body 
structure,  steering,  suspension.  wheels,  tires, and exhaust system for 
damage. 
Also, check the fuel lines  and cooling  system for any leakage. 
Your  vehicle 
will require  more  frequent service due to off-road use. Refer 
to the  Maintenance  Schedule  for  additional information. 
Driving at Night 
Night driving  is  more  dangerous  than  day driving. One reason  is that  some 
drivers  are  likely 
to be  impaired - by  alcohol or drugs,  with night  vision 
problems, 
or by  fatigue. 
Here  are  some  tips on night  driving. 
0 Drive  defensively. 
Don’t  drink  and  drive. 
Adjust  your  inside  rearview mirror  to  reduce  the glare from headlamps 
Since  you can’t  see as well,  you may need  to slow  down  and keep  more 
behind 
you. 
space 
between  you and other  vehicles. 
a Slow  down,  especially  on higher  speed  roads. Your headlamps  can light 
up  only 
so much road  ahead. 
0 In remote  areas,  watch for animals. 
If you’re tired, pull  off the road  in a safe place  and rest. 
4-23 
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Maintenance  Schedule I - Gasoline  Engines  With 
Light  Duty  Emissions 
12,000 Miles (20 000 km) 
0 Change  engine  oil and filter (or every 3 months, whichever  occurs 
first). 
An  Emission  Control  Sewice. 
0 Lubricate the front  suspension,  king pin bushings, steering linkage, 
transmission  shift  linkage,  transfer  case  shift linkage, parking brake 
cable  guides,  rear driveline  center  splines,  front  axle propshaft splines, 
brake  pedal springs  and clutch pedal  springs. Ball  joints and lung  pin 
bushings  should not  be lubricated  unless their temperature  is 
10" F 
(-12" C), or higher.  When  weather  is cold,  let the ball  joints and king 
pin  bushings  warm up  before  lubrication  or they  could  be damaged. 
Perform each  of the listed lubrication  service  items at this mileage 
interval  (or every 
6 months, whichever  occurs  first). 
0 Check  readfront axle fluid level and  add fluid as needed. Check 
constant  velocity joints and axle  seals  for  leaking. 
** 
I DATE I ACTUALMILEAGE I SERVICED BY: I 
15,000 1 Ies (25 000 km) 
0 Change  engine  oil and  filter  (or  every 3 months, whichever  occurs 
first). 
An Emission  Control  Service. 
Lubricate  the front  suspension,  king pin bushings,  steering linkage, 
transmission  shift  linkage,  transfer  case  shift linkage,  parking brake 
cable  guides,  rear driveline  center  splines,  front  axle  propshaft splines, 
brake pedal  springs  and  clutch pedal springs.  Ball joints  and  king pin 
bushings  should not  be lubricated unless their temperature  is  10" 
F 
(-1 2 O C), or higher.  When  weather  is cold,  let  the ball joints and king 
pin  bushings  warm  up before lubrication  or they could be  damaged. 
Perform  each 
of the listed lubrication  service items at this mileage 
interval  (or every 
6 months,  whichever  occurs  first). 
0 Inspect air cleaner  filter  if you are driving  in dusty  conditions.  Replace 
filter  if necessary. 
An Emission  Control  Service. 
(Continued) 
7-15 
ProCarManuals.com 

LI 
c 
Maintenance Schedule I - Gasoline  Engines  With 
Light  Duty  Emissions 
(Contimed) 
Drain, flush  and refill  cooling  system (or every 24 months, whichever 
occurs  first).  See  "Engine  Coolant'' 
in the lndex  for what to use. 
Inspect hoses. Clean radiator. condenser. pressure  cap and  neck. 
Pressure  test 
the cooling system and pressure  cap. An Emission  Control 
Service. 
For 2-Wheel Drive vehicles  only: Clean  and repack  the front  wheel 
bearings  (or at each brake relining, whichever  occurs  first). 
Replace  spark plugs. 
An E~~zissior~ Corztrol Ser-vice. 
Replace  air cleaner filter.  Replace  filter more often under dusty 
conditions. 
An Emission Cor~tr-01 Service. 
Rotate tires.  See "Tire  Inspection  and Rotation" in the lndex for proper 
rotation pattern  and additional information. 
I DATE I ACTUAL MILEAGE I SERVICED BY: 
33,000 Miles (55 000 km) 
0 Change  engine  oil and  filter  (or every 3 months, whichever  occurs 
first). 
An Er7rissiou Contmi Service. 
0 Lubricate  the front  suspension,  king pin bushings, steering  linkage, 
transmission  shift  linkage, transfer case shift linkage,  parking brake 
cable  guides,  rear driveline  center  splines,  front  axle propshaft  splines, 
brake pedal  springs  and clutch pedal  springs. 
Ball joints  and king  pin 
bushings  should  not  be lubricated  unless their temperature  is 
10" F 
(-I 2" C), or higher.  When  weather is cold, let  the ball joints  and king 
pin bushings  warm up before lubrication  or they could be damaged. 
Perform 
each of the listed lubrication  service items  at this mileage 
interval  (or every 
6 months,  whichever  occurs  first). 
ProCarManuals.com 

Maintenance  Schedule I - Gasoline  Engines  With 
Light 
Duty Emissions 
(Continued) 
0 Rotate  tires. See “Tire Inspection  and Rotation” in the Index  for  proper 
rotation  pattern  and additional  information. 
I DATE I ACTUALMILEAGE I SERVICED BY: I 
45,000 Mes (75 000 km) 
0 Change  engine  oil and  filter  (or every 3 months, whichever occurs 
first). 
An Emission Control Service. 
0 Lubricate  the front suspension, king  pin bushings, steering linkage, 
transmission  shift  linkage, transfer case shift linkage,  parking brake 
cable  guides, rear  driveline  center  splines,  front  axle  propshaft splines, 
brake  pedal  springs and clutch pedal  springs. Ball  joints and king 
pin 
bushings  should not  be lubricated unless their temperature  is 10” F 
(-12” C),  or higher.  When weather  is cold, let the  ball  joints  and king 
pin  bushings  warm 
up before lubrication  or they  could  be damaged. 
Perform  each  of the listed  lubrication service  items at this  mileage 
interval  (or  every 
6 months, whichever  occurs  first). 
0 Check  readfront  axle  fluid level and add fluid as needed. Check 
constant  velocity joints and axle  seals  for  leaking.$’* 
0 For 2-Wheel  Drive vehicles only: Clean and repack  the front  wheel 
bearings  (or 
at each  brake relining, whichever  occurs  first). 
(7 Inspect air  cleaner  filter if you are  driving in dusty conditions.  Replace 
filter  if necessary. 
An Emission Control Service. 
I DATE I ACTUALMILEAGE I SERVICED BY: 
.7 - 22 
ProCarManuals.com 

60,000 Miles (100 000 km) 
c; 
0 
0 
0 
il 
0 
Change  engine oil and filter  (or every 3 tnonths. whichever occurs 
first). 
AI? Emission Control Service. 
Lubricate  the front suspension. king  pin bushings,  steering linkage, 
transmission  shift linkage, transfer  case shift linkage, parking brake 
cable  guides,  rear driveline  center splines. front axle propshaft splines. 
brake  pedal springs  and clutch  pedal springs.  Ball joints  and king 
pin 
bushings  should  not  be lubricated unless their temperature  is 10" F 
(-12" C), or higher.  When weather is cold, let the  ball  joints  and king 
pin  bushings  warm up before lubrication  or they  could  be damaged. 
Perform each  of the  listed  lubrication service items  at  this mileage 
interval  (or every 
6 months, whichever occurs  first). 
Check rear/fi-ont axle fluid level and add fluid as needed. Check 
constant 
-\;elociry joint5 and axle seals for leaking.';'';' 
For  2-Wheel  Drive vehicles only: Clean and repack the front  wheel 
bearings  (or at each brake relining, whichever  occurs  first). 
Inspect  engine accessory drive belt. 
An Emissiolz  Comrol  Ssrvice. 
Drain, flush and refill  cooling  system (or  every 24 months, whichever 
occurs  first).  See  "Engine  Coolant" 
in the lndex  for what to use. 
Inspect hoses. Clean radiator, condenser, pressure  cap and  neck. 
Pressure  test  the cooling system  and pressure  cap. 
,411 Erltission Control 
Service. 
Replace spark plugs. AI? Emission Control Service.. 
Replace air  cleaner  filter. Replace filter  more often  under dusty 
conditions. 
Arz Emission Colztrol Service. 
Inspect fuel  tank,  cap and lines  for  damage  or leaks . Inspect fuel  cap 
gasket  for any  damage.  Replace parts  as needed. 
A17 E~nission Control 
Service. -i- 
7-26 
ProCarManuals.com 

Maintenance  Schedule II - Gasoline Engines With 
Light  Duty  Emissions 
The  services  shown in this schedule up to 60.000 miles ( 100 000 km)  should 
be  performed  after 
60.000 miles ( 100 000 km) at the same  intervals. 
Footnotes 
-i- The  California  Air Resources  Board has determined that the Failure  to 
perform  this maintenance  item  will 
not nullify the emission  warranty or 
limit recall liability prior 
to the  completion of vehicle  useful  life. We, 
however.  urge  that  all  recommended  maintenance  services  be performed at 
the  indicated  intsrkrds 
and t!w rnlrinlcn;nnx be recor-ded. 
0 
0 
0 
0 
Locking Differential - Drain iluid mci wi.il! :ii !.iI-st cngine oii change. 
At subsequent  oil changes,  check  fluid level  and  add fluid as needed. If 
driving in dusty  areas  or  towing a trailer.  drain fluid and refill every 
15,000  miles 
(25 000 km). 
Standard  Differential - Check tluid  level  and  add fluid as needed  at 
every  engine 
oil change.  If--driving in dusty  areas  or towing  a trailer. 
drain  fluid  and  refill every 
15,000 miles (25 000 km). 
More  frequent  lubrication  may  be  required  for  heavy-duty  or  off\
-road  use. 
3500 HD Models with applications  requiring  extreme overload/trailer 
towing  conditions  and  high speed  (above 
45 mph or 72 km/h) 
conditions  for  extended  periods 
of time must have the drive axle fluid 
changed  every 
3,000 miles (5 000 km) or 3 months, whichever  occurs 
first,  or  must  use  7SW-140  synthetic tluid  meeting 
GM specifications. 
See  "Recommended  Fluids and  Lubricants" 
in this section. 
7,500 Miles (12 500 km) 
0 Change  engine oil and filter  (or  every 12 months. whichever  occurs 
first). 
A11 E1?7iLs.~io1I Corlti-ol Serl7ic-e. 
Lubricate  the front  suspension,  king  pin  bushings.  steering linkage, 
transmission  shift linkage, transfer  case  shift linkage. parking brake 
cable  guides. 
rear driveline  center splines, front axle propshaft  splines, 
brake  pedal  springs and clutch  pedal springs. 
Ball joints  and  king  pin 
bushings  should 
not be  lubricated  unless their temperature is 10" F 
(-12" C). or higher.  When  weather  is cold,  let  the  ball  joints and king 
pin  bushings  warm  up before lubrication  or they  could  be damaged. 
Perform  each of  the  listed lubrication  service items  at  this mileage 
interval  (or every 
12 months.  whichever  occurs  first). 
(ColltillltL'd) 
7-27 
ProCarManuals.com 

0 
0 
0 
0 
0 
Check readfront  axle fluid  level  and  add  fluid as needed. Check 
constant  velocity  joints and axle seals for leaking.*’*’ 
For  2-Wheel  Drive  vehicles only: Clean  and repack  the front  wheel 
bearings  (or at each brake relining, whichever  occurs  first). 
Drain, flush  and  refill cooling  system  (or every 
24 months, whichever 
occurs  first).  See  “Engine Coolant” 
in the  Index for what  to use. 
Inspect hoses. Clean radiator, condenser, pressure  cap and  neck. 
Pressure test  the cooling  system  and pressure  cap. 
AI1 Emissiorr  Cor?tro/ 
Se n?ic.e. 
Replace  spark plugs. Au Emissiorz  Control Senice. 
Replace  air  cleaner filter. An Emissiorl  Cofltrol Service. 
DATE  SERVICED BY: ACTUAL 
MILEAGE I 
37,500 Miles (62 500 km) 
0 Change  engine  oil and  filter  (or every 12 months, whichever  occurs 
first). 
An EmissioM  Control SorLice. 
0 Lubricate the front suspension,  king  pin bushings,  steering linkage, 
transmission  shift linkage, transfer case shift  linkage, parking brake 
cable  guides,  rear driveline center splines.  front  axle propshaft splines, 
brake  pedal springs and clutch  pedal springs.  Ball joints  and king  pin 
bushings  should 
not be lubricated unless their temperature is 10” F 
(-12” C), or  higher.  When  weather is cold, let the  ball  joints  and king 
pin bushings  warm 
up before lubrication  or they could  be damaged. 
Perform each  of the listed lubrication service items  at this mileage 
interval 
(or every 12 months, whichever  occurs  first). 
7-30 
ProCarManuals.com 

Maintenance  Schedule I - Gasoline  Engines  Heavy 
Duty  Emissions 
12,000 Miles (20 000 km) 
0 
0 
0 
CI 
Change  engine  oil and filter (or every 3 months, whichever  occurs 
first). 
An Emission  Control Service. 
Lubricate the  front suspension, king  pin bushings,  steering linkage, 
transmission  shift linkage, transfer  case shift  linkage,  parking brake 
cable  guides,  rear driveline  center  splines,  front  axle  propshaft splines, 
brake pedal  springs and clutch pedal  springs. Ball  joints and king 
pin 
bushings  should not  be lubricated unless their temperature  is 10" F 
(-12" C), or higher. When weather is cold,  let the  ball  joints  and king 
pin  bushings  warm  up before lubrication  or 
they could be damaged. 
Perform each  of the  listed lubrication service items  at this mileage 
interval  (or every 
I2 months,  whichever occurs  first). 
Check  readfront  axle fluid level  and add fluid as needed. Check 
constant  velocity  joints and axle  seals for leaking.'k'k 
For  2-Wheel  Drive vehicles  only: Clean and repack  the front  wheel 
bearings  (or at each brake  relining, whichever  occurs first). 
Tnspect  air  cleaner  filter 
if you are driving in dusty  conditions.  Replace 
filter 
if necessary. An Ewission Control  Senice. 
Replace  fuel filter. Replace filter sooner  if  it is clogged? 
Inspect accessory  drive  (serpentine)  belt for  cracks,  fraying  and wear 
and  check belt  for proper tension. Adjust  or replace  belt 
as needed. AH 
Emission  Control Service. 
Inspect shields and underhood insulation for  damage  or looseness. 
Adjust  or replace  as required. 
This  is a Noise  Emission  Control 
Service.  Applicable  only  to  vehicles  sold  in  the  United  States.\
 
If  your  engine  has a thermostatically  controlled  cooling fan, inspect  all 
hoses and ducts  for proper  hook-up  (or every 
12 months. whichever 
occurs  first).  Be sure  the valve works properly. 
This  is a Noise 
Emission  Control  Service.  Applicable  only 
to vehicles  sold  in  the 
United  States. 
DATE SERVICED BY: ACTUAL MILEAGE 
I 
7- 37 
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