Hummer H1 Service Manual page 24

_______________
®
Change transmission filter.
Check items in Maintenance Groups A, B, and C.
Change geared hub oil.
Change axle oil.
Inspect brake fluid for moisture contamination.
27,000 Miles (43,400 km)
900 hrs normal use or 450 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Group A.
30,000 Miles (48,300 km)
1,000 hrs normal use or 500 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filter.
Replace fuel filter element.
Check items in Maintenance Groups A and B.
33,000 Miles (53,100 km)
1,100 hrs normal use or 550 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Group A.
36,000 Miles (58,000 km)
1,200 hrs normal use or 600 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filter.
Replace fuel filter element.
Change engine coolant.
Change transmission and transfer case fluid.
Change transmission filter.
Check items in Maintenance Groups A, B, and C.
Change geared hub oil.
Change axle oil.
39,000 Miles (62,800 km)
1,300 hrs normal use or 650 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Groups A.
42,000 Miles (67,600 km)
1,400 hrs normal use or 700 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filter.
Replace fuel filter element.
Check items in Maintenance Groups A and B.
05745159
General Information, Lubrication and Maintenance
45,000 Miles (72,400 km)
1,500 hrs normal use or 750 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Group A.
48,000 Miles (77,200 km)
1,600 hrs normal use or 800 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filter.
Replace fuel filter element.
Change engine coolant.
Change transmission and transfer case fluid.
Change transmission filter.
Check items in Maintenance Groups A, B, and C.
Change geared hub oil.
Change axle oil.
Inspect brake fluid for moisture contamination.
51,000 Miles (82,100 km)
1,700 hrs normal use or 850 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Group A.
54,000 Miles (86,900 km)
1,800 hrs normal use or 900 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filter.
Replace fuel filter element.
Check items in maintenance Groups A and B.
57, 000 Miles (91,700 km)
1,900 hrs normal use or 950 hrs severe operation
Change engine oil and replace filter.
Check items in Maintenance Group A.
60,000 Miles (96,500 km)
2,000 hrs normal use or 1,000 hrs severe operation
Change engine oil and replace filter.
Clean or replace air filters.
Replace fuel filter element.
Change engine coolant.
Change transmission and transfer case fluid.
Inspect fuel tank, fuel cap and fuel lines.
Change transmission filter.
Check items in Maintenance Groups A, B, and C.
Change geared hub oil.
Change axle oil.
Drain & replace brake fluid.
NOTE:
Some maintenance requires specialized know-
ledge or equipment and may be best handled by
qualified service technicians at your nearest HUMMER
dealer.
NOTE:
After your vehicle has been driven for 63,000
miles (101,400 km) repeat the schedule indicated in this
section, starting at 3,000 miles (4,800 km).
1-23
3-1-01