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Tuner in Training
fans loosing tune?
2014 Denali truck with 6.2. For some strange reason, occasionally my coolant temp gauge will not read any temperature. It stays pegged on the lowest temp on the gauge (160) even though the engine is up to full temp. And the fans immediately come on at high speed even on cold start up and remain on all the time. I mean it can be 30 degrees outside with a cold engine and the fans come on within 2 seconds of starting the engine.
If I connect my HPTuners editor and pull up the tune and reflash it, the temp gauge starts working again and the fan turn off and work normally. That may last for one day or for a couple weeks then it happens again.
Any ideas what's going on here?
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Advanced Tuner
It's setting a trouble code
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Tuner in Training
No. There are are no trouble codes being set. no check engine light.
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Advanced Tuner
Post your tune and a log with it happening with the dtc read
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My 15 c7 did this for the first time last night. Has to be a bug, I'm going to keep monitoring this as well
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Advanced Tuner
It's setting a code I have found some code readers want detect some codes that GDS will I have had my ass burned a few times with generic code readers. I have even forward a GDS log to engineering and they found codes not showing up with GDS. Truth be known the GM engineers are still trying to figure it all out too!
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Advanced Tuner
I check for any bulletins didn't see any thing?
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