4WD
$50 site donor 2024
I found the drain plug on the 2017 Tahoe going in from the fender - not fun at all - but got a gallon of AC Delco Dexcool concentrate in …Here is the clamp expander which I used from above the radiator to the bottom hose. The bottom hose connection is shown inside the red circle. There is not much room to get pliers or a pair of clamp piers down in there.
Since there is no radiator cap, the engine is filled through the coolant jug.
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Going to leave that alone for a year - try it again by removing the air box …