07 Tahoe service 4x4 lifgt on HELP!!!

['07Tahoe]

I changed my TCCM because the code U0102. I used the TCCM from Dorman and after the install nothing changed. Two days later out of the blue the service warning went off for a day and now its back on again. Any help will be greatly appreciated, I don't want to take it to the shop. Thanks

 

[Nabes04Tahoe]

The module needs to be programmed to your vehicle with a factory scan tool.

 

['07Tahoe]

The dorman modules say that they are already programmed. Have you heard otherwise about them?

 

[Nabes04Tahoe]

Yes, it still needs to be programmed. Or you may have another issue with the vehicle that is an underlining cause.