I can't seem to find any info on this DTC.

The only problem I am having is that the Wait to Start light remains illuminated about 1 min prior to starting when the truck is cold. The WTS light goes out immediately after starting as it should. I have no driveability issues. My predator shows DTC nc106. If I clear the code, The WTS light seems to operate correctly on the first ignition cycle but reverts to abnormal and throws the code again on cold starts thereafter. It happens with the stock tune and the increased HP tunes on the predator. It seems to have started after an oil/fuel/air filter change.

I have a finger stick in place and and a cat delete pipe. These are the only mods not listed in my sig.

Any help would be greatly appreciated.

Thanks,
Mike

That's not a valid dtc number for a duramax. It should start with a P for powertrain codes. P0106 has to do with the MAP sensor on a gas engine.

thanks,

That is the only code I get when I ask the predator to give me error codes.

What about the odd WTS light behavior?

6.6L LLY Engine DTC U0106 Resets or Will Not Clear - kw diesel glow plug glowplug SES control module communication start wait light #PIP3010A - (Dec 17, 2004)

6.6L LLY Engine DTC U0106 Resets or Will Not Clear

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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Condition/Concern:

Glow plug control module loss of communication, possible DTC U0106 set, and DTC will not clear. An internal problem with the glow plug controller may cause an intermittent DTC U0106 to set and the technician is unable to clear it using the Tech 2.

Recommendation/Instructions:

An updated Glow Plug Control module has been released to repair this concern. The part number for the updated module is 97379635.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

Models:

(04 C2 C3 K2 K3 6.6 LLY Chevrolet Silverado GMC Sierra GMT800) and (04 C4 C5 D4 D5 E4 E5 6.6 LLY Chevrolet Kodiak GMC Topkick GMT560)

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Mike