Engine Overheating
The vehicle has several indicators to warn of engine overheating.
There is an engine coolant temperature gauge on the instrument panel cluster.
See Engine Coolant Temperature Gauge on page 5‑14.
The vehicle may also display an ENGINE OVERHEATED IDLE ENGINE and ENGINE OVERHEATED STOP ENGINE message in the Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑39.
You may decide not to lift the hood when this warning appears, but instead get service help right away.
See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10.
If you do decide to lift the hood, make sure the vehicle is parked on a level surface.
Then check to see if the engine cooling fans are running. If the engine is overheating, both fans should be running. If they are not, do not continue to run the engine and have the vehicle serviced.
Notice: Engine damage from running the engine without coolant is not covered by the warranty.
Notice: If the engine catches fire while driving with no coolant, the vehicle can be badly damaged.
The costly repairs would not be covered by the vehicle warranty.
See Overheated Engine Protection Operating Mode on page 10‑20 for information on driving to a safe place in an emergency.
See also:
Emissions Inspection and Maintenance Programs
Some local governments may have programs to inspect the on-vehicle emission control equipment.
For the inspection, the emission system test equipment is connected to the vehicle’s Data Link Connect ...
Passenger Compartment Air Filter
The filter removes dust, pollen, and other airborne irritants from outside air
that is pulled into the vehicle.
The filter should be replaced as part of routine scheduled maintenance. See Maintenan ...
Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck
capability combined with greater off-road versatility. It is highlighted by a
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