Another Coolant Low Service Bulletin 18-NA-006 - Page 2 - Chevy and GMC Duramax Diesel Forum
L5P TSB (service bulletins, recalls, updates) Postings of Tech Service info for any New L5P engine issues.

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post #11 of 11 (permalink) Old 04-19-2019, 02:28 PM
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Join Date: Jul 2009
Posts: 69
I will have to look for this TSB.... it has been out for 6 months now and was what my dealer worked with. Search this site... It is where I found it for myself. The dealer needs to look at these items before tearing your truck apart. Many had leaks at these line connections. It has nothing to do with your coolant tank, sensor, or head gaskets. Search hard for this recent TSB and save yourself the agony. Thankfully they cleared my truck.
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