GMC TopKick 2007 Owner's Manual page 368

30,000 Miles (48 000 km)
Gasoline Engine Only: Check engine oil life
system. If engine oil and filter are changed,
reset system. See "Engine Oil (Gasoline
Engine)" in the Index. (2) (8)
®
6.6L DURAMAX Diesel Without Engine Oil
Life System Only: Change engine oil and
filter (or every 12 months, or every 750 hours
of engine operation, whichever occurs first). (2)
®
6.6L DURAMAX Diesel With Engine Oil
Life System Only: Check oil life system.
If engine oil and filter are changed, reset
system. See "Engine Oil (DURAMAX
Diesel)" in the Index. (2) (9)
Check fluid levels (or every 3 months,
whichever occurs first). (1) (5)
Gasoline Engine: Inspect engine air cleaner
filter. If necessary, replace the filter. If vehicle
is driven in dusty/dirty conditions, inspect
filter at every engine oil change. See
Engine Air Cleaner/Filter on page 277 for
more information.
368
Diesel Engine: Inspect engine air cleaner filter
change indicator. If necessary, replace the
filter. If vehicle is driven in dusty/dirty conditions,
inspect filter change indicator at every engine
oil change. See Engine Air Cleaner/Filter
on page 277 for more information.
DURAMAX
filter (or every 750 hours of engine operation,
whichever occurs first).
Chassis lubrication service (or every 6 months,
whichever occurs first). (11)
Replace fuel filter(s) (or every 12 months,
whichever occurs first). (2)
®
/Isuzu
Steering system service. (12)
Front and rear suspension service. (13)
Spring-to-axle U-bolts and shackle bolts
service. (15)
Exhaust system service (or every 6 months,
whichever occurs first). (2) (3) (16)
Wheel bearing (grease type) service (and
whenever hubs are removed). (22) (36)
Wheels and tires service. (14)
Hydraulic brake service (or every 6 months,
whichever occurs first). (6) (36)
®
/Isuzu Diesel Only: Replace fuel