Chevrolet 2007 Kodiak Owner's Manual page 371

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 280 for more information.
®
DURAMAX /Isuzu Diesel Only: Replace fuel
filter (or every 750 hours of engine operation,
whichever occurs first).
Chassis lubrication service (or every 6 months,
whichever occurs first). (11)
Cooling system service. Clean the cooling
system filler cap with clean water, clean
the core, pressure test the cap and the
system for proper pressure capability, and
inspect condition of cooling and heater
hoses and clamps. Replace hoses if cracked,
swollen, or damaged.
Inspect door hinge pins and bushings and
replace as necessary.
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)
Wheels and tires service. (14)
Hydraulic brake service (or every 6 months,
whichever occurs first). (6) (36)
Parking brake service (or every 6 months,
whichever occurs first). (21)
Air brake service (or every 6 months, whichever
occurs first). (32)
Air brake automatic slack adjuster service (or
every 500 hours, whichever occurs first). (33)
Check air brake relay valve operation and check
for leaks (or every month, or every 300 hours,
whichever occurs first).
Clean air brake application valve (or every
3 months, or every 300 hours, whichever
occurs first). Lubricate linkage.
Air brake chamber service (or every 2 months,
whichever occurs first). (34)
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