Help to identify unknown tuner/tunes - Chevy and GMC Duramax Diesel Forum
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post #1 of 2 (permalink) Old 06-15-2019, 08:27 PM Thread Starter
 
Join Date: Jun 2019
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Help to identify unknown tuner/tunes

I have a 2015 3500 that I purchased lightly used. It came with a PPEI shift on the fly switch hooked up, but I rcvd. no details on tuner or tunes, and there is no module or anything either. Lots of emissions sensors and such are disconnected (I get no warnings) and no issues. I’m in Alaska and don’t have any emissions rules.
How can I determine what Tuner and Tunes it has?

Also, Is DEF fluid removed from the operating equation with tuners and deletes?
This truck has never said I was anything but OK w/ DEF and I’ve never added it???
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post #2 of 2 (permalink) Old 06-15-2019, 09:45 PM
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Join Date: May 2007
Location: Rocky Top, USA
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Have you contacted PPEI yet, considering you have the PPEI shift on the fly switch, this is where Id start, call them on the phone.
Besides theres no way to know who did the tuning, tuning is done thru the obd2 port to the ECM and possibly the tcm theres no module with EFI.
Only the owner and or the tuner knows what your truck has for tuning.
Good luck getting any info from PPEI.

Dan
2007.5 GMC Sierra 3500 SRW L.B. "BLACK" C.C. 4X4 LMM Z71
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EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
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2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning
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