1998 GMC SIERRA engine oil

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Page 398 of 452

GMC SIERRA 1998  Owners Manual Long  TripMighway  Maintenance  Schedule =- Gasoline  Engines 
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

Page 399 of 452

GMC SIERRA 1998  Owners Manual 1 Long  Trip/Highway  Maintenance  Schedule -- Gasoline  Engines 1 
7,500 Miles (12 500 km) 
0 Change engine oil and filter  (or  every 12 months, whichever  occurs  first). 
0 Lubricate chassis compo

Page 400 of 452

GMC SIERRA 1998  Owners Manual Long  Trip/Highway  Maintenance  Schedule -- Gasoline  Engines I 
22,500 Miles (37 500 km) 
0 Change engine oil and filter (or every 12 months, whichever  occurs  first). 
0 Lubricate chassis componen

Page 401 of 452

GMC SIERRA 1998  Owners Manual Long Trip/Highway  Maintenance  Schedule -- Gasoline  Engines I 
0 Vehicles  With GVWR Above 8,500 lbs. Only:  Inspect  shields and underhood 
insulation  for  damage  or  looseness.  Adjust or  repla

Page 403 of 452

GMC SIERRA 1998  Owners Manual 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). 
0 Lubricate  chassis componen

Page 405 of 452

GMC SIERRA 1998  Owners Manual Long Tripmighway Maintenance  Schedule -- Gasoline  Engines I 
67,500 Miles (112 500 km) 
~~  ~  ~~ 
17 Change engine oil and filter  (or  every  12 months, whichever  occurs  first). 
0 Lubricate cha

Page 406 of 452

GMC SIERRA 1998  Owners Manual Long Tripmighway Maintenance Schedule -- Gasoline  Engines I 
82,500 Miles (I37 500 km) DATE I 
Change engine oil and  filter (or evl_-,r I2 months, whichever occurs  first). 
An Emission  Control Ser

Page 407 of 452

GMC SIERRA 1998  Owners Manual Long  Tripmighway  Maintenance  Schedule -- GasolineEngcI 
0 Vehicles With GVWR Above 8,500 Ibs. Only:  Inspect  shields and underhood 
insulation  for damage  or looseness. Adjust  or replace 
as req