Chevrolet 2007 Kodiak Owner's Manual page 367

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)
Air brake system valve service (or every
3 months, or every 900 hours, whichever
occurs first). (37)
Air intake system service (or every 24 months,
whichever occurs first). (3) (4) (23)
Evaporative Control System service,
if equipped, (or every 24 months,
whichever occurs first). (2) (24) †
Rear axle air shift motor service. (10)
24,000 Miles (40 000 km)
Isuzu 6H Diesel Without Engine Oil Life System
Only: Change engine oil and filter (or every
12 months, or every 600 hours of engine
operation, whichever occurs first). (2)
Isuzu 6H Diesel With Engine Oil Life System
Only: Check oil life system (or every 12 months,
or every 600 hours of engine operation,
whichever occurs first). If engine oil and filter
are changed, reset system. See "Engine Oil
®
(DURAMAX /Isuzu Diesel)" in the Index. (2) (7)
Lubricate U-joints (or every 6 months,
whichever occurs first).
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