Engine Cooling System Messages
A/C OFF DUE TO HIGH ENGINE TEMP
This message displays when the engine coolant becomes hotter than the normal operating temperature. To avoid added strain on a hot engine, the air conditioning compressor automatically turns off. When the coolant temperature returns to normal, the air conditioning compressor turns back on. You can continue to drive the vehicle.
If this message continues to appear, have the system repaired by your dealer as soon as possible to avoid damage to the engine.
COOLANT LEVEL LOW ADD COOLANT
This message will display if the coolant is low. See Engine Coolant on page 10‑17.
ENGINE OVERHEATED — IDLE ENGINE
This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down.
ENGINE OVERHEATED — STOP ENGINE
This message displays and a continuous chime sounds if the engine cooling system reaches unsafe temperatures for operation. Stop and turn off the vehicle as soon as it is safe to do so to avoid severe damage. This message clears when the engine has cooled to a safe operating temperature.
HIGH COOLANT TEMPERATURE
This message displays if the coolant temperature is hot. See Engine Overheating on page 10‑20.
See also:
Pulling a Trailer
Here are some important points:
○ There are many laws, including speed limit restrictions that apply to trailering.
Check for legal requirements with state or provincial police.
○ Do n ...
A Transformative Engine
You might be thinking, "How can GMC's compact pickup feel like a muscle car?"
Well, there's more to it than stuffing a 5.3-liter V-8 under the hood, but that
engine goes a long way towar ...
Park Brake and P (Park) Mechanism Check
WARNING
When you are doing this check, the vehicle could begin to move.
You or others could be injured and property could be damaged.
Make sure there is room in front of the vehicle in case it begi ...





