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International Automotive Technicians Network
Re: tc light on in cluster no codes
Posted to Technical Discussion Forum on 2/18/2020

I've found using anything but the Tech2 on those vehicles will cause problems.

I just installed a new EBCM on a 2005 Hummer and without thinking used my J-box. It failed and as I was going to start a second try I remembered past experiences. Connected my Tec... Login to read more.