1998 GMC SIERRA service

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Page 379 of 452

GMC SIERRA 1998  Owners Manual 1 Short  Trip/City  Maintenance  Schedule -- Gasoline  Engines I 
4:::: Drive axle service  (see "Recommended  Fluids and 
Lubricants" 
in the  Index  for  proper  lubricant to use): 
0 Locking  Diffe

Page 380 of 452

GMC SIERRA 1998  Owners Manual I Short TripKity  Maintenance  Schedule -- Gasoline  Engines I 
3,000 Miles (5 000 km) 
Ci Change engine oil and filter (or every 3 months, whichever occurs  first). 
0 Lubricate chassis components (o

Page 381 of 452

GMC SIERRA 1998  Owners Manual I Short TripKity  Maintenance  Schedule -- Gasoline  Engines I 
Lubricate  chassis  components  (or  every 3 months, whichever occurs first). 
0 Check readfront  axle  fluid  level  and add fluid  as

Page 382 of 452

GMC SIERRA 1998  Owners Manual I Short  Trip/City  Maintenance  Schedule -- Gasoline  Engines I 
15,000 Miles (25 000 km) (Continued) 
0 Check rear/front axle fluid  level  and  add  fluid as needed. Check constant 
0 For Two-Wheel

Page 383 of 452

GMC SIERRA 1998  Owners Manual I Short  Trip/City  Maintenance  Schedule -- Gasoline  Engines I 
0 Lubricate  chassis components (or every 3 months, whichever  occurs  first). 
0 Check rearlfront axle fluid level and add fluid as n

Page 384 of 452

GMC SIERRA 1998  Owners Manual I Short  TripKity  Maintenance Schedule -- Gasoline  Engines I 
30,000 Miles (50 000 km) 
0 Change engine oil and filter  (or every 3 months, whichever occurs  first). 
An Emission  Control  Service.

Page 385 of 452

GMC SIERRA 1998  Owners Manual I Short TripKity  Maintenance  Schedule -- Gasoline  Engines I 
0 Lubricate  chassis components  (or every 3 months, whichever  occurs  first). 
0 Check redfront  axle  fluid level and add  fluid  as

Page 386 of 452

GMC SIERRA 1998  Owners Manual I Short TripKity  Maintenance  Schedule -- Gasoline  Engines I 
42,000 Miles (70 000 km) 
0 Change engine oil and filter  (or every 3 months, whichever  occurs  first). 
0 Lubricate chassis components