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Message: <blockquote data-quote="NXR71" data-source="post: 22721" data-attributes="member: 6892">GM cares nothing about things they do not sell or install. Disconnecting the negative cable is the safest way for potentially inexperienced people.That being said, it is 100% acceptable to put a disconnect switch on the positive post. As long as all wires are removed from one post or the other the result is the same. Many people with the 2023 and 2024 have put the disconnect on the positive post for exactly the reason you mention.As for the AWD thing, I wish GM had specifically addressed it rather than obliquely addressed it. Feel free to ask your dealer to get a clarification. GM has screwed that bulletin up once already and it sounds like they have an intern writing it.Technically, if GM does not say you need AWD on or off than either position is acceptable. Another question to ask would be if it is acceptable to flat tow with AWD turned OFF and a donut spare on the REAR.When the donut spare is installed it automatically disables AWD. So on our 2020 AWD, which must have AWD turned on, I don't think I can flat tow if I use the donut spare. You may be able to if you have two full-sized tires on the front. (If you get a front flat you would need to put the donut spare on the rear and move the full-sized tire to the front.)</blockquote>