I just traded my dad my 2008 GMC Sierra SLT Z71 for his 2005 Chevy Silverado 2500HD 6.0L 4x4. My questions is... I have the power/heated/turn signal/power extending trailer mirrors and I have ordered the power/heated/turn signal/ power folding mirrors to replace them. I do tow a trailer but I have add on mirrors that I like more then the extending ones currently on the pickup and i need the mirrors to fold in order to get into the garage . I've seen tons of info on adding the power folding mirrors to the Silverado but not swapping the power extending for the power folding. I'm wondering if this is a simple swap because they have all the same features and the switch has the extending/folding diagram on it. I'm a newbie here and this is my first post so please don’t flog me if this has already been answered. Thanks in advance for the help!