GMC TopKick 2007 Owner's Manual page 381

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) †
Gasoline Engine: Air compressor remote
mounted air filter dry element pleated paper
air strainer service (or every 6 months or
every 1800 hours, whichever occurs first).
96,000 Miles (152 000 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).
97,500 Miles (156 000 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)
Check fluid levels (or every 3 months,
whichever occurs first). (1) (5)
Chassis lubrication service (or every 6 months,
whichever occurs first). (11)
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).
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