Extended Parking; Diesel Particulate Filter - Chevrolet GMC 2024 Manual

Warning (Continued)
While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
6. Before starting the engine, be sure to
unplug and store the cord.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.

Extended Parking

This vehicle is not equipped with an
automatic engine shutdown feature.

Diesel Particulate Filter

The exhaust system has a Diesel Particulate
Filter (DPF) to reduce vehicle emissions. On
some exhaust systems with a DPF, the
exhaust cooler mixes air with the exhaust to
lower the temperature before it leaves the
tailpipe.
The DPF, the tailpipe, and other exhaust
system components must not be altered.
Inspect regularly and clean any mud or dirt
from the exhaust cooler, especially where
the exhaust cooler connects to the tailpipe
and the openings where fresh air enters the
cooler.
The DPF will clean itself as part of normal
operation. Several factors including fuel
consumed, hours of engine operation, and
miles driven are monitored by the Engine
Control Module (ECM). The self-cleaning
occurs approximately once per tank of fuel.
Vehicles with the DPF have specific fuel and
engine oil requirements. See Fuel for Diesel
Engines 0 15 and Engine Oil 0 26.
Caution
Damage can occur to the DPF
components if the required Ultra Low
Sulfur Diesel (15 ppm sulfur maximum)
fuel and engine oil specified in the
Recommended Fluids and Lubricants
Driving and Operating
Caution (Continued)
section of this manual are not used. This
damage would not be covered by the
vehicle warranty.
Under certain conditions, such as idling or
very short trips, the self-cleaning process has
less efficiency and cannot be completed.
To resolve this, continue driving safely at a
steady speed as close to the posted speed
limit as possible, preferably without
stopping, until the message turns off. This
can take up to 30 minutes.
During DPF self cleaning or during
extended idling in P (Park), the exhaust
system and exhaust gases are very hot.
Things that burn could touch hot exhaust
parts under the vehicle and ignite. You or
others could be burned. Do not park,
or idle for an extended period of time,
near or over papers, leaves, dry grass,
or other things that can burn. Keep the
exhaust area clear of material that could
ignite or burn. See Parking over Things
(Continued)
That Burn in the owner s manual.
9
Warning