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GM Silverado: 2005 5.3l Silverado. When I'm in stop and go…

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2005 5.3l Silverado. When I'm...
2005 5.3l Silverado. When I'm in stop and go traffic with the a/c off the engine temperature begins to climb to about 230*f. If I turn the a/c on the temperature will drop back down just below 210*f. Should'nt it remain at 210*f?
Submitted: 3 years ago.Category: GM
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Answered in 18 minutes by:
7/1/2015
GM Mechanic: FIXITMAN, Master Technician replied 3 years ago
FIXITMAN
FIXITMAN, Master Technician
Category: GM
Satisfied Customers: 17,611
Experience: ASE Master Certified
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Hello my name is Bobby. Thank you for the question. Can you tell me if your model is equipped with an electric fan or an engine driven fan?
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Customer reply replied 3 years ago
Electric fan
GM Mechanic: FIXITMAN, Master Technician replied 3 years ago
Thank you. It sounds like the fan is not coming on when the engine warms up. It comes on when the a/c is turned on. Allow the engine to warm up and see if the fan kicks on. If not then you will need to diagnose the circuit to see if it is a relay or a control issue. Did you plan on fixing this yourself?
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Customer reply replied 3 years ago
Yes I am
GM Mechanic: FIXITMAN, Master Technician replied 3 years ago
Then see if the fan is acting like I mentioned. If the fan is not coming on when the engine gets hot then if you have a voltage meter we can continue.
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