Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10399647) - 2016 - crc - 5/25/16
Vehicle Care
243
Engine Inspection Sub Cover
(Crew Cab Model)
To gain access to the engine
compartment, pull the lock lever
(red) (1) on the driver
’
s seat
cushion (2) to unlock it, raise the
driver
’
s seat cushion and remove
the sub cover.
Engine Coolant Reserve Tank
Inspection Cover (Crew Cab
Model)
To gain access to the engine
coolant reserve tank, remove the
inspection cover located under the
rear left seat.
Engine Oil (Diesel)
Engine oil is an important factor
determining engine performance
and longevity. Be sure to use only
the specified oil and oil filters. The
engine oil level must be checked
and the oil should be changed
regularly according to the
Maintenance Schedule.
The engine oil performs the
following important functions:
.
It prevents engine parts from
becoming worn.
.
It cools engine parts.
.
It cleans engine parts.
.
It seals the combustion
chambers and prevents rust.
Replace the engine oil at regular
intervals.
When particulate matter (PM) has
accumulated to a preset level in the
diesel particulate filter (DPF), the
filter is automatically regenerated
through combustion. To make this
regeneration (combustion) possible,
a small amount of fuel is injected
into the engine combustion chamber
after firing. This causes fuel to
gradually become mixed with the
engine oil, and the engine oil level
may rise beyond the original level.
This does not indicate a malfunction
of the engine.