²Continuously driving above
normal highway speeds.
²Driving in stop-and-go traffic.
²Operating in extremely dusty
conditions. If operating under
these conditions, the air cleaner
and emission filters must be
replaced at more frequent
intervals than normal.
²Extensive idling (such as
delivery use).
Automatic transmission
maintenance
The automatic transmission fluid
should be changed every 35,000
km (21,000 miles).
The 5R55E automatic transmission
fluid should be changed every
80,000 km (50,000 miles).
If in addition to the specified
severe duty operating conditions,
your automatic transmission may
need to be checked more
frequently if your driving habits
frequently include any of the
following:
²Using your vehicle as a
snowplow.
²Off road and 4x4 operation.
Rear axle maintenance
1
All rear axle lube quantities must
be replaced every 160,000 km
(100,000 miles)
2or anytime that
the axle has been submerged in
water. Excepting these conditions,
the lube should not require
DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT IDLING IN PARK
Severe service conditions
3
