Chevrolet/GMC 6.6L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-13337828) - 2020 - CRC - 4/17/19
Driving and Operating 21
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.