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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 03-14-2010, 01:46 PM   #1 (permalink)
Stevo6754
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Service stabilitrak & trailer brake

Wasn't sure which subforum this would fit under so if its in the wrong one please move.

2009 silverado 2500, all options and aftermarkets as listed in sig.

Lately if I go over speed bumps too fast my truck would throw me the service stabilitrak, service trailer brake codes. It would do this until I turned it off and let it sit for a couple hours. I didn't think much of it since I rarely go over speed bumps too fast.

Fast forward to yesterday. Some idiot backed in to me with his truck, his ball mount hit the plastic covering on the side of the rear bumper. Was no visual damage except scratched plastic so I let the guy go. Now Im getting service stabilitrak & trailer brake randomly while just regular driving. Any ideas? Any sensors I should check?

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Old 03-14-2010, 07:15 PM   #2 (permalink)
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Are you getting ABS and traction control lights as well? The best would to get the DTCs pulled.

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Old 03-14-2010, 07:35 PM   #3 (permalink)
Stevo6754
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Quote:
Originally Posted by MTU alum View Post
Are you getting ABS and traction control lights as well? The best would to get the DTCs pulled.
I cant remember, Ill let you know when I drive it later. I tried to pull the DTC's problem is this is a random problem that occurs while driving, and my ppe doesnt want me to even turn the ignition all the way on while having it plugged in.

Think I might drive around till it comes on, immediately stop then try to pull the DTC's.
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Old 03-14-2010, 07:51 PM   #4 (permalink)
Tanc Crusher
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What happens when the ppe is plugged in and you turn the key to Run?
Having some odd problems. Have you tried to return to stock tuning and unmarry the PPE to see what happens.
Sometimes the trailer issue is moisture in the plug or wiring harness if the wiring has been skinned.

Brian
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Last edited by Tanc Crusher; 03-14-2010 at 07:51 PM.
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Old 03-14-2010, 08:02 PM   #5 (permalink)
Stevo6754
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Not sure I just read the PPE said to just turn it so electronics are on not to run so I havent tried it. Also this truck has never been tuned its still stock tuned.
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Old 03-14-2010, 08:37 PM   #6 (permalink)
Tanc Crusher
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I do not know the procedure for PPE so was unsure what you were getting at. Thought it did weird things.

Brian
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2007.5 GMT-900 Chevrolet Silverado 2500HD CC/LB LTZ 4x4 Summit White. 4-18-2007. Powered by the LMM Duramax 365hp/660tq coupled to the MW7 Allison 1000 6-speed through the NP1 NP263XHD Transfercase.
[DuramaxTuner for EFI-Live with DSP5 ECM Tune and TCM tune. Merchant Automotive for Suncoast IV with 1056 converter, Amsoil Synthetic Fluid in everything, Pitman Arm Fix.
Configure your FlashScan V2 the way it should be https://www.dieselplace.com/forum/sho...d.php?t=401770
Future: SDP S475 Twin Setup is here-install 6-18-11. On board Air with Side Step Tube Air Tanks, Custom Bed Fuel Tank and Water/Meth Tank.
New Toy: 2012 Dodge Challenger SRT8 Red and all stock for now.

Check out: My Garage for pics of the Truck, Mods, and Toys.
UA Steamfitter, Local 136 Evansville, IN
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Old 03-14-2010, 08:55 PM   #7 (permalink)
DURAtotheMAX
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PPE is not going to help you find EBCM (abs/stabilitrak/traction control module) codes.

You'll need a tech 2. I dont think efilive will work because they have not mapped out the 2009 TCM's and 2009 stabilitrak EBCM's....I might be wrong tho.

ben
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Old 03-14-2010, 10:38 PM   #8 (permalink)
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If you are getting ABS, TCS, Stabilitrak lights you probably either have a wheel speed issue or a power/ground issue to the module.

If you are getting only Stabilitrak lights, it is either a steering wheel angle sensor issue, yaw sensor issue, or a commucation issue with ECM/TCM.

If you do not have the opportunity to get codes, I would probably start looking at wheel speed connections and EBCM grounds. If you had codes it would put you in the right direction.
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Old 03-16-2010, 10:24 AM   #9 (permalink)
Stevo6754
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Yep Im getting traction control as well, I imagine you are right that it is a sensor. Taking it to the dealership tomorrow.
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Old 03-17-2010, 02:31 AM   #10 (permalink)
tdahl
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I lifted my truck and put 35" tires on 20x9 wheels. My stabilitrak light turns on every day. The dealer said they couldn't do anything about it cause any mod to the suspension will do this. even wheels and tires. It makes me mad!

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