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Old 04-30-2019, 11:24 AM   #10 (permalink)
D_R_C
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Join Date: May 2007
Location: Rocky Top, USA
Posts: 4,038

Driving around town possibly waisting fuel and time if the first one or 2 don’t have the tool to read TCM, or just drive to the place that has the scanner that reads TCM.
I don’t think a basic scanner can read TCM, basic OBD2 scanners are what most auto part have, where I live.
Where most shops have the ability to read everything having the proper software, but this comes at a cost, not free.

Allison might wave the fee, if they end up doing the repair.
Something to consider checking out.

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2007.5 GMC "Black" Sierra SLT 3500HD SRW C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe
DHD PCV Re-route
AirDog 4G100


2007 GMC Yukon Denali "BLACK" 6.2 gasser, DIY stock airbox mod, K & N OEM drop-in, Airaid intake tube, EFILive TCM tuned

Last edited by D_R_C; 04-30-2019 at 11:24 AM.
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