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Old 02-28-2018, 01:45 PM   #16
Johnwon
 
Drives: 2016 Mosaic Black 2SS, NPP, A8.
Join Date: Jun 2016
Location: Jacksonville, FL
Posts: 285
Low coolant level will cause this too, even if it's not low enough to set off a warning light. I just had this as the issue on another GM vehicle and got a new water pump out of the deal, because that's where the leak was from. Thankfully, it was under warranty yet.

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