One of the aboriginal steps to card challenges with your cooling system is to be acquainted how it functions. In short, coolant picks up heat in the engine and releases heat as it passes buttoned up the radiator. The cooling devices circulate antifreeze, cover it or administration its temperature. Troubleshoot the cooling system in a GMC Sierra by routinely checking cooling step devices.
Instructions
1. Test the water pump for leaks. Drain antifreeze properly and dispose of it safely. Coolant's sweet smell attracts animals and small children and ingesting the toxic liquid can be fatal.5.
Gaze upper and lower radiator hoses, heater and bypass hoses and manifold coolant hoses. For instance, the upper hoses degree approximately 2 inches Broad and take coolant between the radiator and engine. Worn hoses bob to cooling course problems.
3. Overseer the antifreeze calm. Low antifreeze results in overheating and other cooling problems. With low levels, add DEX-COOL extended life coolant to the expansion tank reservoir. This pertains to the VORTEC 4300 V6, VORTEC 5300 V8 and VORTEC 8100 V8 engines.
4. Explore cooling problems by draining coolant and flushing the system. Your douse pump pushes coolant completed the engine, radiator and heater core. Signs of a defective water pump involve a faint antifreeze Aroma or spots of coolant under your Sierra when parked for short continuance frames.2. Observe your hoses for damage from cracks, collapses, leaks or dryness.
Inspect the radiator cap for signs of damage. A faulty cap could reveal corrosion. Contact a mechanic to use a pressure tester or an adapter to inspect the cap's pressure rating and functioning. Replace a defective cap promptly.
6. Wash and gently scrub the front of your radiator. When you drive, dirt, rocks, leaves and other debris suck into the fins of your radiator trapping heat. Use a soft nylon brush, soapy water and a water hose to clean your radiator front.
7. Determine if the thermostat is sticking. Constant low temperature readings or peaks between high and normal temperatures indicate a stuck thermostat. The thermostat usually sits inside the housing on the engine side of the upper radiator hose.
