Hummer 2010 H3 - Manual (Page 369)

Service and Maintenance 11-5
. Exhaust system and nearby heat
shields inspection for loose or
damaged components.
. Accelerator pedal check for
damage, high effort, or binding.
Replace if needed.
First Engine Oil Change After
Every 40 000 km/25,000 Miles
. Fuel system inspection for
damage or leaks.
First Engine Oil Change After
Every 80 000 km/50,000 Miles
. Engine air cleaner filter
replacement. See Engine Air
Cleaner/Filter on page 10‑17.
. Automatic transmission fluid
change (severe service) for
vehicles mainly driven in heavy
city traffic in hot weather, in
hilly or mountainous terrain,
when frequently towing a
trailer, or used for taxi, police,
or delivery service. See
Automatic Transmission Fluid on
page 10‑12.
. Four‐wheel drive only: Transfer
case fluid change. Check vent
hose at transfer case for kinks
and proper installation. Check
to be sure vent hose is
unobstructed, clear, and free of
debris. During any maintenance,
if a power washer is used to
clean mud and dirt from the
underbody, care should be taken
to not directly spray the transfer
case output seals. High pressure
water can overcome the seals
and contaminate the transfer
case fluid. Contaminated fluid
will decrease the life of the
transfer case and should be
replaced.
First Engine Oil Change After
Every 160 000 km/100,000 Miles
. Automatic transmission fluid
change (normal service).
See Automatic Transmission
Fluid on page 10‑12.
. Rear axle fluid change (normal
service). See Rear Axle on
page 10‑29.
. Spark plug replacement and
spark plug wires inspection.
An Emission Control Service.
First Engine Oil Change After
Every 240 000 km/150,000 Miles
. Engine cooling system drain,
flush, and refill, cooling system
and cap pressure check, and
cleaning of outside of radiator
and air conditioning condenser
(or every 5 years, whichever
occurs first). See Cooling
System on page 10‑18. An
Emission Control Service.
. Engine accessory drive belt
inspection for fraying, excessive
cracks, or obvious damage
and replacement, if needed.
An Emission Control Service.