
Part A: Scheduled  Maintenance  Services 
Using Your Maintenance Schedule 
We at General  Motors  want to help  you keep your vehicle in good working 
condition.  But  we don’t  know exactly  how you’ll  drive it. You  may  drive 
very  short  distances  only 
a few times  a week.  Or you  may  drive  long 
distances  all the time 
in very hot, dusty weather.  You  may use your vehicle 
in making  deliveries.  Or  you  may drive it to work, to  do  errands  or in many 
other  ways. 
Because 
of all  the different ways people  use their  GM vehicles, maintenance 
needs  varv. 
You may even  need more frequent  checks and replacements than 
you‘ll  find 
in the schedules in this  section. So please read  this section and 
note  how  you  drive. If you  have any  questions  on how  to keep your vehicle 
in good  condition.  see  your GM dealer. 
This  part  tells  you the maintenance  services  you should have  done and 
when 
you should  schedule  them. If you go to your  dealer  for  your service  needs, 
you’ll  know that  GM-trained  and  supported  service people 
will perform the 
work  using  genuine 
GM parts. 
The  proper  fluids  and  lubricants to use are listed 
in Part  D.  Make  sure 
whoever  services your  vehicle uses these. 
All parts  should  be replaced  and 
all  necessary  repairs  done before  you or anyone  else  drives  the vehicle. 
These  schedules  are  for  vehicles that: 
carry passengers and cargo  within recommended  limits. You will find 
these  limits  on your vehicle’s  CertificatiodTire  label.  See  “Loading 
Your  Vehicle“ 
in the Index. 
are  driven  on  reasonable  road surfxes  within  legal  driving limits. 
are driven  off-road in the recommended  manner.  See “Off Road 
Driving  With  Your  Four-wheel  Drive Vehicle” 
in the Index. 
use the recommended  unleaded fuel.  See “Fuel” in the index. 
Selecting  the  Right  Schedule 
The proper  maintenance  schedule for your vehicle  depends on which  engine 
you  have 
in your vehicle and  how  you  use your vehicle. 
Gasoline  engine  vehicles and diesel  engine  vehicles have different 
maintenance  requirements. 
If you have  a diesel  engine,  follow a schedule 
designated  for  diesel engine  vehicles only.  If  you have 
a gasoline  engine. 
you  must first  determine  whether your  engine has 
a light duty  or  a heavy 
duty  emissions  classification.  Follow a maintenance  schedule designated 
for 
for your  engine.  See  “Engine  Identification” in the Index  to find your 
engine‘s emission  classification. 
c easoline  engines with the emissions  classification  (light duty or heavy  duty) 
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If your engine has more  than one  emissions  classification, the classification 
is determined by the Gross  Vehicle  Weight  Rating  (GVWR) of your  vehicle 
as shown  on  the Certification  Label.  See “Loading  Your  Vehicle” 
in the 
Index. 
Once  you’ve determined your  engine type and, 
if necessary, emissions 
classification,  you’ll need to  decide which  of  the  two schedules  is  right  for 
your vehicle.  See Definitions  for Maintenance  Schedule 
I and Maintenance 
Schedule 
I1 following. 
Schedule  I Definition - Gasoline  Engines  With  Light  Duty 
Emissions 
Follow Maintenance  Schedule I if any  one of these  is true for your vehicle: 
iII Most  trips are  less than 5 to 10 miles (8 to 16 km). This  is particularly 
important  when outside temperatures  are  below freezing. 
0 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. 
0 You frequently  tow a trailer. 
Schedule 
I should also be  followed if the  vehicle  is  used  for  delivery 
service,  police, taxi, or other commercial  application. 
Schedule I Intervals - Gasoline  Engines  With  Light  Duty 
Emissions 
Every 
3,000 Miles (5 000 km) or 3 Months,  Whichever Occurs First 
Engine Oil and Filter  Change 
Chassis  Lubrication 
Drive Axle Service 
At 6,000 Miles (10 000 km) - Then  Every 12,000 Miles (25 000 km) 
Tire  Rotation 
Every 75,000 Miles (25 000 km) 
Air Cleaner Filter Inspection, if driving in dusty  conditions 
Front Wheel Bearing Repack 
(or at each brake  relining)  (2WD  Only) 
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Every 30,000 Miles (50 000 km) 
Cooling System Service (or every 24 months) 
Spark  Plug Replacement 
Fuel  Filter  Replacement 
Air  Cleaner  Filter Replacement 
Front Wheel Bearing Repack 
Every 50,000 Miles (83 000 km) 
Automatic Transmission Service (severe conditions  only) 
Every 60,000 Miles (100 000 km) 
Spark  Plug Wire Inspection 
Engine  Accessory Drive Belt Inspection 
Fuel Tank, 
Cap and  Lines Inspection 
Engine  Timing Check 
Schedule 1 Definition - Gasoline  Engines  With  Heavy  Duiy 
Emissions 
I 
Follow Maintenance  Schedule I if any  one of these 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. 
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. 
Schedule 
I should also be followed if the vehicle  is  used for delivery 
service,  police, taxi,  or  other  commercial application. 
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Every 24,000 Miles (40 000 km) 
Cooling  System  Service (or every  24 months,  whichever  occurs  first) 
Air  Cleaner  Filter Replacement 
Front Wheel  Bearing Repack  (or at Each  Brake  Relining)  (2-Wheel Drive 
Only 
1 
Fuel Filter  Replacement 
Engine  Timing Check 
Thermostatically  Controlled Air  Cleaner  Inspection 
Air Intake  System Inspection 
Every 27,000 Miles (45 000 km) 
Spark  Plugs  Replacement 
Every 30,000 Miles (50 000 km) 
Clutch Fork Ball Stud Lubrication  (5-Speed Transmission with Deep-Low 
Only) 
Every 50,000 Miles (83 000 km) 
Automatic  Transmission  Service 
Every 60,000 Miles (100 000 km) 
Spark Plug Wire Inspection 
Exhaust 
Gas Recirculation  (EGR) System Inspection 
Fuel  Tank,  Cap and Lines  Inspection 
Evaporative  Emission  Control  System Inspection 
Electronic  Vacuum Regulator  Valve (EVRV) Inspection 
Schedule I Definition - Diesel Engines 
Follow  Maintenance  Schedule I if any one of these is true  for your  vehicle: 
0 
0 
0 
0 
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. 
Schedule I should also be followed if the vehicle is used for delivery 
service.  Dolice, taxi, 
or other commercial  application. 
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Every 50,000 Miles (83 000 km) 
Automatic Transmission Service 
Every 60,000 Miles (100 000 km) 
Crankcase Depression Regulator  Valve (CDRV)  System Inspection 
Engine  Accessory  Drive Belt Inspection 
Exhaust  Gas Recirculation  (EGR) System Inspection 
(if equipped) 
Exhaust Pressure Regulator  Valve Inspection 
Maintenance  Schedule I - Gasoline  Engines  With 
Light 
Duty Emissions 
The services  shown in this  schedule up to 60,000 miles (1 00 000 km)  should 
be  performed  after 
60,000 miles (100 000 km) at the  same  intervals. 
Footnotes 
3 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  intervals and the maintenance  be recorded. 
:$* Drive  axle  service: 
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). 
0 Standard  Differential - Check fluid  level and add fluid as needed  at 
every  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 kmh) 
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. 
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Maintenance  Schedule I - Gasoline  Engines  With 
Light  Duty  Emissions 
3,000 Miles (5 000 km) 
[7 Change  engine  oil  and filter  (or every 3 months, whichever  occurs 
first). 
An Emission Control Sen7ic.e. 
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 
(-1 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). 
C Check rear/front axle fluid  level  and add -fluid as needed. Check 
constant  velocity  joints  and 
axle seals for leaking. *'* 
DATE SERVICED BY: ACTUAL MILEAGE I 
6,000 Miles (10 000 km) 
iI Change  engine  oil and  filter  (or every 3 months, whichever  occurs 
first). 
AI? Emission Confro1 Ser\lic.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" E 
(,-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. 
*'$ 
(Contiwed) 
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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 ACTUAL  MILEAGE I SERVICED BY: 
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,  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 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. 
*'g 
DATE SERVICED BY: ACTUAL MILEAGE 
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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) 
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