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Ok success, but not as I was expecting.

Removing the remote start wire from the ALDL serial data wire improved things with my macbook air but did not solve the 70 minute READ VCM problem. Atleast...

Ah-ha, yes I do have a wire hooked to the serial data wire on the ALDL. I’ll remove it and see what happens. Thank you for the reply.

Thank you for your replies. I?d imagine that low speed would take even longer, but it?s worth a shot to see if there is a positive change.

Is there any consequence to aborting the read if it ends...

Factory radio, and a factory alarm, though an aftermarket remote start is installed.

Hey, everyone. I?m new to tuning and using hptuners for the first time. I?m building a fresh motor for my 04 Yukon and I?m familiarizing myself with everything ahead of tuning for larger injectors...