Chevrolet/GMC 6.6L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-16504481) - 2023 - CRC - 9/26/22
16 Driving and Operating
2. Starting in the middle, attach fastening
points as illustrated.
3. To remove, reverse the steps listed
previously.
Engine Heater
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Warning
Do not plug in the engine block heater
while the vehicle is parked in a garage or
under a carport. Property damage or
personal injury may result. Always park
the vehicle in a clear open area away
from buildings or structures.
If equipped, the engine heater can provide
easier starting in cold weather conditions at
or below −18 °C (0 °F).
For engine heater operation, see “Engine
Heater” in the owner’s manual.
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.
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