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Disappearing coolant

11745 Views 9 Replies 7 Participants Last post by  Slvrdgr
2011 LTZ 57k has a disappearing coolant issue, have had to refill the reservoir twice now in around 30 days. Each time it has taken over 1/2 gallon. What am I looking for?
Thanks Rick
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Check you water outlet. My disappearing coolant wasn't solve until I got my water outlet replaced. Never showed on a pressure test. I went four years with disappearing coolant. Turns out the water outlet was barely seeping and burning off on the head. Then my water outlet finally started leaking and I got it replaced under warranty right before it was going to expire. Once my water outlet was replaced coolant stayed same level and smell was gone in the engine bay when I would open the hood right after driving the car.
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