GMC TopKick 2007 Owner's Manual page 373

52,500 Miles (84 000 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)
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DURAMAX /Isuzu Diesel Engine Only: Adjust
valve lash (or every 2,625 hours of engine
operation, whichever occurs first). (18)
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)
60,000 Miles (96 000 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)
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)
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/Isuzu
373