I have the same, "new" type of Tow Mirrors. Busted the Driver's Side glass (*(&^(*&*(^). Bought a replacement mirror/glass/plastic backside assembly. Reviewed the old one - seems to have to "push inward" and then slide left to "snap" a lever into place. Tried it the other night up here in cold VT; had to turn the mirror fully outward. No luck, hard to do; DIDN'T want to snap the new mirror too!
Suggestions very appreciated folks! Sources, directions? This version doesn't have the retention spring/band that is noted in the 2006 Service Manual (maybe change mid-stream?), probably changed for 2007's and we got an early 2nd version....?
Kevin in VT