I have an '07 Silv (NBS) Z71 4x4 that I had tuned by Allen a few weeks ago (he removed all the TM he could find). The issue is when I'm driving in 2Lo and punch WOT (especially while turning a corner) the engine doesn't respond right away. I'm assuming this is remnants of TM that Allen couldn't find to get rid of and it's limiting power to the rear end while the ETC kicks in. I get the little ETC symbol flashing on the dash while this happens and once the rear end locks up, the engine gets going. Pretty annoying though. I was wondering if anyone else has seen this problem with the ETC program. I don't seem to have the problem in AUTO mode.


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