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coolant level algorithm
I have a tech help post on this as well. But I have a 2013 GMC truck with low coolant message. I have confirmed that the surge tank or radiator does not have the typical coolant level sensor. Service information does not say much and wiring diagram has no sens... Login to read more. 
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| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2013 GMC Sierra 1500 SLE 5.3L
| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
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