1998 GMC SIERRA engine

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Page 394 of 452

GMC SIERRA 1998  Owners Manual Short TripKity  Maintenance  Schedu’? -- Gasoline  Engines 
84,000 Miles (140 000 km) (Continued) 
0 Check rear/front  axle fluid level  and  add fluid as needed. Check constant 
e3 Rotate tires. Se

Page 395 of 452

GMC SIERRA 1998  Owners Manual I Short Trip/City Maintenance  Schedule -- Gasoline  Engines 
0 Replace fuel filter. An Emissior?  Control Service. (See  footnote?.) 
0 Rotate tires.  See "Tire  Inspection and  Rotation? in the Ind

Page 396 of 452

GMC SIERRA 1998  Owners Manual I Short Trip/City Maintenance  Schedule -- Gasoline Engines I 
96,000 Miles (160 000 km) (Continued) 
0 Check readfront  axle  fluid  level and add fluid as needed. Check constant 
0 Rotate tires. See

Page 397 of 452

GMC SIERRA 1998  Owners Manual Short TripKity  Maintenance  Schedule -- Gasoline  Engines 
- In hilly or mountainous terrain. 
- When doing frequent  trailer towing. 
- Uses such as found in taxi, police  or delivery  service. 
Man

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