
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 II - Gasoline  Engines  With 
Light  Duty  Emissions 
(Continued) 
U Check  rear/front  axle fluid  level  and  add fluid as needed. Check 
constant  velocity joints and axle  seals  for leaking4’* 
El Rotate tires.  See “Tire Inspection  and Rotation” in the  Index  for proper 
rotation  pattern and additional  information. 
DATE  SERVICED BY: ACTUAL MILEAGE 
45,000 Miles (75 000 km) 
0 Change  engine  oil and filter (or every  12 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 
12 months, whichever  occurs  first). 
0 For 2-Wheel  Drive vehicles  only: Clean and repack the  front wheel 
bearings  (or  at  each  brake relining,  whichever  occurs  first). 
Check readfront  axle  fluid level  and add  fluid as needed. Check 
constant  velocity joints and axle  seals for  leaking.>l:* 
DATE  SERVICED BY: ACTUAL MILEAGE 
7-31 
ProCarManuals.com 

I 
Maintenance  Schedule II - Gasoline  Engines  With 
Light  Duty  Emissions 
I 
rn 
50,000 Miles (83 000 km) 
0 Change  automatic transmission  fluid  and filter if the vehicle  is mainly 
driven under  one or more  of these  conditions: 
0 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 me your vehicle  under arzy of these  conditions,  the  fluid 
md.filter  do 
not require  changing. 
Manual transmission fluid  doesn't require change. 
I DATE I ACTUALMILEAGE I SERVICED BY: I 
52,500 Miles (87 500 km) 
0 Change  engine oil and filter  (or  every 12 months. whichever  occurs 
first). 
An Emission Control Sunlice. 
[7 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). 
(Continued) 
7-32 
ProCarManuals.com 

Maintenance  Schedule I1 - Gasoline Engines With 
Light  Duty  Emissions 
(Continued) 
E Check  rear/front  axle fluid level  and add  fluid as needed. Check 
constant  velocity joints and axle seals for  leaking.:!::!: 
3 Rotate tires. See "Tire  Inspection and Rotation" in the  Index  for  proper 
rotation pattern and  additional  information. 
DATE  SERVICED BY: ACTUAL  MILEAGE L 
60,000 Miles (100 000 km) 
0 
n 
C 
El 
Change  engine oil and filter (or every 12 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 
12 months. whichever  occurs  first). 
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). 
Inspect  engine accessory  drive belt. 
An Enzission Control Senice. 
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. 
AH Emissio~ Control 
Service. 
7-33 
ProCarManuals.com 

I 
Maintenance  Schedule II - Gasoline  Engines  With 
Light  Duty  Emissions 
0 Replace spark plugs. At1 Emission  Control  Senlice. 
0 Inspect spark plug wires. Ai7 Emission Control  Service. ; 
0 Replace  air  cleaner filter. An E~~zission Control Sunice. 
- 
r! Inspect fuel tank, cap and lines for  damage or leaks. Inspect fuel  cap 
gasket  for  any  damage.  Replace parts 
as needed. An E~nission Control 
Service. ? 
DATE 
SERVICED BY: ACTUAL MILEAGE I 
< 
Maintenance  Schedule I - Gasoline  Engines  Heavy 
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 
*<: Drive  axle  service: 
a 
a 
0 
a 
Locking Differential - Drain  fluid and refill at first engine  oil 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 fluid 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 00 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 
75W-140 synthetic fluid meeting GM specifications. 
See  “Recommended  Fluids and Lubricants” 
in this section. 
7-34 
ProCarManuals.com 

Maintenance Schedule I - Gasoline Engines  Heavy 
Duty Emissions 
3,000 Miles (5 000 km) 
El Change  engine  oil and filter  (or every 3 months, whichever  occurs 
first). 
An Emission Conrrol Sen4c.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 IO" 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). 
0 Check readfront  axle  fluid level  and  add fluid as needed. Check 
constant  velocity joints and axle  seals  for  leaking.** 
DATE I ACTUALMILEAGE I SERVICED BY: 
6,000 Miles (10 000 km) 
0 Change  engine  oil and  filter  (or every 3 months,  whichever  occurs 
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 IO" 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). 
first). 
An Emission 
Co1zt1-01 Service. 
(Corztin~wd) 
7-35 
ProCarManuals.com 

Maintenance  Schedule I - Gasoline  Engines  Heavy 
Duty  Emissions 
(Continued) 
0 Check  rear/front axle  tluid level  and  add fluid as needed. Check 
constant  velocity joints and axle  seals  for  leaking.'!:" 
0 Rotate tires. See "Tire  Inspection  and Rotation" in the Index  for proper 
rotation pattern and additional  information. 
DATE  SERVICED BY: ACTUAL  MILEAGE I 
. 
9,000 Miles (15 000 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 
12 months, whichever occurs  first). 
0 Check rear/front  axle fluid level  and add  tluid  as needed. Check 
constant  velocity joints 
and axle seals for leaking."" 
I 
DATE  SERVICED BY: ACTUAL  MILEAGE 
7-36 
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 
ProCarManuals.com