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Discussion Starter · #1 ·
My new 2021 1500 Silverado baby diesel has run out of def. I have some in the truck just in case it dose respond in limp mode but I’ve gone >100 miles over empty and no response or warnings have happened yet. Seeing that I don’t know a thing about the def systems or how they work. If I do not replenish the tank will it harm the truck?
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