2005 GMC Sierra "heater core going" Questions

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Question about GMC Sierra

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heater core replacement Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core. When a heater core leaks, a new heater ...

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Question about GMC Sierra

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...heater core I have a 3500 5.7 motor is there any thing I need to know if I am doing it my self is it ok to by pass the core how long can I drive the truck if I did that it is ok to by pass the heater ...

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...heater core to get "air locked" Check your coolant level. There could also be a problem with your water pump not able to pump correctly due to a worn or corroded impeller. This will usually cause the ...

...heater core both need to be hot at operating temp. If both are hot the problem will be inside with the heater control. I only one heater hose is hot the problem will be the heater core. I am assuming ...

Question about GMC Sierra

1 Answer

How do I bypass heater core in my 1990 gmc 1500? There are two hoses going to the core, those two hoses get removed from the heater and connected together....

...heater core is blown check the following.1. Check coolant level while engine is cold.2. Leave the radiator cap off and let the engine run. See if you can see the coolant circulate when the engine is ...

...heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core. Low coolant level. A thumbs up ...

...heater core. Heater core and hose to radiator are open. Getting poor flow from hose connected to top of engine to heater core. What controls the flow in that hose? HELP. on some GMC models there is a ...

...heater core and opened my resivior lid and squeezed the hoses.. seen some bubbles but i put lid back on and my truck has some heat now.. i rev the motor to around 2500 rpm and it gets hotter. let it ...

Question about GMC Sierra

1 Answer

...heater core, but the water leaks slowly not all at once. If this is the problem i need some advice on how to bypass or replace the heater core Overheating could be several problems, usually the ...

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