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Duramax Fourth Generation: 2007.5-2010 (LMM) Discuss the fourth generation (2007.5-2010) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 07-06-2019, 11:38 AM   #1 (permalink)
Zachb740
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Theft lock mode

I have a 2008 lmm 2500. I thought the trucks starter went out. Started to crank and stopped so changed the starter still same thing. Not getting power to purple exciter wire on starter. Checked fuses swapped relays. Battery’s are good souls 12volts to starter power. If I jump the start with bypass button truck will crank but not fire. Truck has 215k on it. Not deleted. Is there a way to reset this or bypass the theft mode? Trying to get my truck running just got all my stuff in to delete the truck. Thanks in advance.

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Old 07-06-2019, 11:46 AM   #2 (permalink)
OkDually
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Welcome to DieselPlace

This thread might have some info you seek in post #4 :
https://www.dieselplace.com/forum/63...start-lmm.html

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Old 07-06-2019, 12:26 PM   #3 (permalink)
Zachb740
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Thanks for the post, do you know if door can be open or does the door have to be shut and stay shut doing process by chance?
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Old 07-06-2019, 12:28 PM   #4 (permalink)
OkDually
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Quote:
Originally Posted by Zachb740 View Post
Thanks for the post, do you know if door can be open or does the door have to be shut and stay shut doing process by chance?
I'm not sure
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1996 K3500 6.5L,( "F" Eng #141 cast block) 5 speed manual, crewcab, dually longbed: 208,000mi.
Diamond Eye 4" Turbo Back Exhaust w/2.5" Flo-Pro Crossover
AirDog II DF165 w/ tank sock delete - XDP
TD-Max boost controller - Kennedy Diesel
OPS extension hose - Leroy Diesel
Glow Plug Harness- PT Wiring Solutions
Glowshift Maxtow EGT,Boost, Fuel gauges
Boost & Fuel Pressure Bolts - Leroy Diesel
2/0 Battery Cable Upgrade - PT Wiring Solutions
PMD w/#9 resistor and Re-Location Kit, mounted to bumper - Leroy Diesel
GM-5 Turbocharger
4.10 gear ratio
OptiLube summer + Formula


Proud member #1039 of The 3500 Dually Club

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