Page 328 of 376
Downloaded from www.Manualslib.com manuals search engine I Short TripKity  Maintenance  Schedule -- Gasoline  Engines I 
96,000 Miles (160 000 km) 
0 Change engine oil and filter (or every 
3 months, whichever occurs first). 
An Emission Control Service. 
0 Lubricate chassis components; see 
footnote 
## (or every 3 months,  whichever 
occurs first). 
as needed. ** 
0 Check axle fluid level  and  add fluid 
DATE 
SERVICED BY ACTUAL MILEAGE 
99,000 Miles (165 000 km) 
0 Change engine oil and filter (or  every 
3 months, whichever  occurs first). 
An Emission Control Service. 
0 Lubricate chassis components; see 
footnote 
# (or every 3 months, whichever 
occurs 
first). 
as needed. ** 
0 Check axle fluid level  and  add  fluid 
I I I 3 
DATE  SERVICED BY ACTUAL MILEAGE 
7-28   
     
        
        Page 329 of 376

Downloaded from www.Manualslib.com manuals search engine Short TripKity Maintenance  Schedule -- Gasoline  Engines 
100,000 Miles (1 66 000 km) 
0 Drain, flush  and refill cooling system 
(or every 
60 months since last service, 
whichever occurs first). See “Engine 
Coolant’’ 
in the Index for  what  to  use. 
Inspect hoses. Clean radiator, condenser, 
pressure cap  and  neck. Pressure test cooling 
system  and pressure cap. 
0 Inspect spark  plug wires. 
0 Replace spark plugs. 
0 Change automatic transmission fluid and 
An Emission  Control  Service. 
An  Emission  Control Service. 
An Emission  Control  Service. 
filter if the vehicle’s  GVWR  is over 
8600 lbs. or 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. 
- In hilly or mountainous terrain. 
- When doing frequent trailer towing. 
- Uses  such  as  found in taxi, police or 
delivery service. 
If’you do not use your vehicle  under an? of 
these  conditions,  the.fluid  und
require  changing. 
I7 Inspect Positive Crankcase  Ventilation 
(Pcv) valve. An Emission  Control Service. 
DATE  SERVICED BY ACTUAL MILEAGE 
7-29   
     
        
        Page 330 of 376

Downloaded from www.Manualslib.com manuals search engine .Long  Tripmighway  Maintenance  Schedule -- Gasoline  Engines 1 
The services shown in this  schedule  up to 100,000 miles 
(166 
000 km)  should be performed  after 100,000 miles 
(166 
000 km) at the  same intervals. 
Footnotes 
f The U.S. Environmental  Protection Agency  or 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 the vehicle’s useful life.  We, however, 
urge  that all recommended maintenance services  be 
performed  at 
the indicated intervals and  the maintenance 
be recorded. 
# Lubricate  the front suspension, kingpin bushings, 
steering  linkage and rear  driveline  center splines. 
** Drive axle service: 
0 
0 
0 
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 (25 000 km). 
More frequent lubrication may  be required  for 
heavy-duty  use. 
7-30   
     
        
        Page 331 of 376

Downloaded from www.Manualslib.com manuals search engine Long  Tripmighway  Maintenance  Schedule -- Gasoline  Engines I 
7,500 Miles (12 500 km) 
0 Change engine oil  and filter (or every 
12 months, whichever occurs  first). 
An Emission  Control Service. 
0 Lubricate  chassis  components;  see  footnote # 
(or  every 12 months,  whichever  occurs  first). 
0 Check axle fluid level and add fluid 
as needed. 
** 
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. 
DATE  SERVICED BY ACTUAL MILEAGE 
15,000 Miles (25 000 km) 
0 Change engine  oil  and filter (or every 
12 months, whichever occurs first). 
An Emission  Control Service. 
0 Lubricate chassis components; see 
footnote 
# (or  every 12 months, whichever 
occurs first). 
0 Check axle fluid level  and  add fluid 
as needed. 
** 
0 Vehicles  With  GVWR  Above 8,500 lbs. 
Only: Inspect shields  and underhood 
insulation for damage  or looseness. Adjust 
or replace as required. This  is GI Noise  Emission 
Control Service.  Applicuble 
only to vehicles sold in 
the  United 
Stutes. 
(Continued) 
7-31   
     
        
        Page 333 of 376

Downloaded from www.Manualslib.com manuals search engine Long  Tripmighway  Maintenance  Schedule -- Gasoline  Engines I 
30,000 Miles (50 000 km) 
Change engine oil and filter (or every 
12 months, whichever occurs first). 
17 Lubricate chassis components; see 
An Etnission  Control  Service. 
footnote # (or every  12 months, whichever 
occurs  first). 
as  needed. 
‘wf: 
-(or  at each brake relining, whichever 
occurs first). 
0 Check axle fluid level  and  add fluid 
0 Clean and repack the front wheel bearings 
0 Replace fuel  filter. 
An Emission  Control  Service. 
0 Replace air cleaner  filter. 
An Emission Control Servic.-e. 
0 Vehicles  With  GVWR  Above 8,500 lbs. 
Only: 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. 
0 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 
Enzission  Control Service.  Applicable 
only to 
vehicles  sold in  the  United  States. 
I DATE I ACTUAL MILEAGE  SERVICED BY: I 
7-33   
     
        
        Page 336 of 376

Downloaded from www.Manualslib.com manuals search engine Long  TripMighway  Maintenance Schedule -- Gasoline  Engines I 
52,500 Miles (87 500 km) 
0 Change engine oil and filter (or every 
12 months, whichever occurs first). 
An Emission Control Service. 
0 Lubricate  chassis  components;  see  footnote # 
(or  every 12 months,  whichever  occurs  first). 
Check axle fluid level  and  add fluid 
as needed. ** 
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. 
I DATE I ACTUAL MILEAGE (SERVICED  BY:^ 
60,000 Miles (100 000 km) 
0 Change engine  oil  and filter (or every 
12 months, whichever occurs first). 
Lubricate chassis components;  see 
An Emission  Control Service. 
footnote ## (or every 12 months, whichever 
occurs 
first). 
as needed. ** 
(or  at each brake relining, whichever 
occurs  first). 
0 Check axle fluid level and  add  fluid 
0 Clean and repack the front  wheel bearings 
0 Inspect engine accessory drive belt. 
0 Replace fuel  filter. 
An Emission  Control Service. 
An Emission  Control Service. 
7-36   
     
        
        Page 337 of 376

Downloaded from www.Manualslib.com manuals search engine I Long  Tripmighway  Maintenance  Schedule -- Gasoline  Engines 
0 Replace air cleaner filter. 
0 Inspect fuel tank, cap  and'lines  for  damage 
or  leaks.  Inspect  fuel cap gasket  for any 
damage. Replace  parts as needed. 
An Emission  Control Service. -t 
An  Emission  Control Service. 
0 Vehicles With GVWR Above 8,500 lbs.  Only: 
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. 
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 tu 
vehicles sold in the  United  States. 
0 If your  engine has  a  thermostatically 
0 Conduct Exhaust  Gas  Recirculation  (EGR) 
system  inspection  as described  in the 
service  manual. 
An Emission  Control Service. 3- 
inspection.  Check all fuel and  vapor  lines 
and  hoses  for proper  hook-up,  routing  and 
condition.  Check that  the  purge  valve works 
properly,  if equipped. Replace 
as needed. 
An Emission  Control Service. -f 
0 Conduct evaporative  control  system 
I I I 1 
DATE ACTUAL MILEAGE  SERVICED BY: 
7-37   
     
        
        Page 338 of 376

Downloaded from www.Manualslib.com manuals search engine I Long  Tripmighway  Maintenance  Schedule -- Gasolmt: 1 Engines 
67,500 Miles (112 500 km) 
Change engine oil  and filter (or  every 
12  months, whichever occurs first). 
An  Emission  Control  Service. 
0 Lubricate  chassis  components;  see  footnote # 
(or every 12  months,  whichever  occurs  first). 
0 Check axle fluid  level  and  add  fluid 
as  needed. 
** 
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. 
75,000 Miles  (125 000 km) 
0 Change engine oil  and filter (or every 
12  months,  whichever  occurs first). 
An Emission  Control Service. 
0 Lubricate chassis components; see 
footnote 
## (or every  12 months,  whichever 
occurs first). 
0 Check  axle fluid level  and  add  fluid 
as  needed. 
** 
Vehicles  With  GVWR  Above 8,500 lbs. 
Only: 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. 
DATE ACTUAL MILEAGE  SERVICED BY 
7-38