[Smokin06LLY]

U0101 - lost communication with TCM
U0106 - lost communication with GPCM

Truck sat for a month or so without being started. Battery - 06 LLY - was dead - after charge, the truck started right up and ran great but had a CEL. Above are the codes that were pulled. They have been cleared, but I am new to diesels and I want to make sure that the codes were related to the dead battery and I don't have anything further to be concerned about.

TIA

Bill

 

[Smokin06LLY]

I forgot to mention that it is completely stock - no aftermarket anything.

I hope to take delivery of the truck Thursday!!

Can't wait to tow my 8500 lb fifth wheel rv. S/B night and day from 6.0 Gasser (Great truck, but not enough).

Thanks.

 

[saratoga]

Just a thought, but have you had the GPCM re-flash done yet?
http://dieselplace.com/forum/showthread.php?t=73489

 

[Smokin06LLY]

Yeah - the glow plug recall/reflash was done at 46 miles - now has 86.

 

[RayMich]

U0101 - lost communication with TCM
U0106 - lost communication with GPCM

Truck sat for a month or so without being started. Battery - 06 LLY - was dead - after charge, the truck started right up and ran great but had a CEL. Above are the codes that were pulled. They have been cleared, but I am new to diesels and I want to make sure that the codes were related to the dead battery and I don't have anything further to be concerned about.

TIA

Bill

The ECM will set these codes when the battery is dead. The ECM will have trouble talking to the TCM or GPCM if the battery voltage is below 9 volts. I would clear the codes and keep an eye on the voltmeter just in case the alternator might be acting up, but I wouldn't worry about it too much.

Make sure your batteries are fully charged. My main concer would be if the dead batteries froze in the cold temperatures; if so, you'll very likely have to replace the batteries.

 

[Smokin06LLY]

The ECM will set these codes when the battery is dead. The ECM will have trouble talking to the TCM or GPCM if the battery voltage is below 9 volts. I would clear the codes and keep an eye on the voltmeter just in case the alternator might be acting up, but I wouldn't worry about it too much.

Make sure your batteries are fully charged. My main concer would be if the dead batteries froze in the cold temperatures; if so, you'll very likely have to replace the batteries.

Thank you. Dealer replaced batteries at my request, since all this happened before I take delivery. So I should be good to go.