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Dan, Technician
Category: Chevy
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Chevrolet Silverado 1500 2003 silverado low coolant warning

Resolved Question:

2003 silverado low coolant warning comes on for a second,added about a 3/4 a gal antifreeze and water.have noticed i can hear coolant circulating on first start.180,000 miles no water in oil no visable leak what gives.
Submitted: 3 years ago.
Category: Chevy
Expert:  Dan replied 3 years ago.

Welcome to JustAnswer, my name is XXXXX XXXXX I'm here to help get your problem resolved. Ask follow up questions, thanks.

 

Does low coolant warning come on even when coolant level is full?

Customer: replied 3 years ago.

no came on once hot engine ,went off in 10 seconds added coolant right away truck runs fine no issues

Expert:  Dan replied 3 years ago.
Heat works good? Does vehicle ever run hot? So the overflow tank was a little low on coolant and adding coolant has kept the light off? Thanks.
Customer: replied 3 years ago.

heat is fine ,low speed relay recently went .no more warning from command system

 

 

Expert:  Dan replied 3 years ago.
Ok, if the coolant was low then you have a coolant leak either internal such as headgaskets or intake gasket or external such as radiator, hose, ect....If its a small leak then watching fluid and adding once in awhile would work....at least until leak gets worse....To fix you will need to connect a cooling system pressure tester and pressurize system while looking for external leaks...If none are found then you likely have a intake gasket leaking considering you have good heat and it doesnt run hot. Let me know fi you have questions, thanks.
Dan, Technician
Category: Chevy
Satisfied Customers: 21583
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Dan
Dan
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Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database