Overheating

Asked by May 15, 2017 at 06:25 PM about the 2007 Chevrolet Silverado 1500 LT1 Crew Cab 4WD

Question type: Maintenance & Repair

My truck keeps overheating, I just replaced the
thermostat and it is still overheating

1 Answer

26,535

Wish you had given more info..... > Although there can be many different causes of an overheating issue, the reason your engine is overheating is because something inside the cooling system is preventing the absorption, transportation or release of heat. Here are some reasons why heat isn’t leaving your engine compartment: Leak in the Cooling System – This is one of the main causes of engine overheating. If you get a leak in your radiator, water pump, hoses, head gasket or thermostat housing, your engine isn’t going to be able to cool properly. If you can find the leak, you may be able to seal it on your own, but you’ll probably benefit from bringing your car into a mechanic. Coolant Issues – You can have problems with your coolant even if there isn’t a leak in the system. If you put the wrong coolant in your car, or if the coolant-to-water ratio is off, your engine my have problems staying cool. Try flushing the system and adding the proper mix as recommended by your owner’s manual. Blocked Hoses – If there’s no leak and the coolant has been installed properly, the next thing you’ll want to check is your coolant hose. Sometimes dirt or road sediment can get into your coolant department and block the flow of fluid through your hoses. Flushing the system and refilling your coolant tank is once again the preferred course of action. Radiator Problems – Another common cause of engine overheating is a problem with your radiator. Leaks, clogs or problems with the radiator fan all mean that heat can’t properly escape your vehicle, which will cause the temperature to rise. A mechanic will be able to diagnose exactly what’s wrong with your radiator and what needs to be done to correct the problem. Broken Water Pump – The water pump, as the name implies, helps pump and propel engine coolant throughout your cooling system. Any issue associated with the water pump can lead to an overheating engine. Common water pump problems include leaks, shifting of the pump shaft, or eroded impeller vanes. If you notice your car is overheating, turn the heat on in your car, as this will help move hot air out of the engine compartment, and bring it into a trusty mechanic right away. Ignoring the problem can cause your engine system to fail, which can mean thousands of dollars in repairs!

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