2009 Chevrolet Silverado 2500 HD Extended Cab Owner's Manual - Page 254

ENGINE HOT A/C (Air Conditioning) TURNED OFF This message displays when the engine coolant becomes hotter than the normal operating temperature. See Engine Coolant Temperature Gage (US-Canada) on page 3-44. 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 your vehicle. If this message continues to appear, have the system repaired by your dealer/retailer as soon as possible to avoid damage to the engine. This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. See Engine Coolant Temperature Gage (US-Canada) on page 3-44. See Overheated Engine Protection Operating Mode on page 5-37 for information on driving to a safe place in an emergency. ENGINE OVERHEATED STOP ENGINE Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. See Engine Overheating on page 5-34 for more information. This message displays and a 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. ENGINE OIL HOT IDLE ENGINE This message displays when the engine oil becomes hotter than the normal operating temperature. Stop and allow the vehicle to idle until it cools down. See Engine Coolant Temperature Gage (US-Canada) on page 3-44. ENGINE OVERHEATED IDLE ENGINE Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. See Engine Overheating on page 5-34 for more information. 3-68