I checked all other functions of the mirrors and discovered they do not auto fold in when the button is pushed.
I was able to fold them in by hand and they powered themselves back out fine.
All other adjustments work as advertised.
So what's my deuces problem? Do these mirrors have a master control that might be malfunctioning, or is it in the mirrors themselves? I'd like a cheap fix of course, so replacing one mirror is much more ideal than doing both.
I discovered with this that I really hate having something not working on the deuce, even if it has an easy work around like rolling the window down and adjusting by hand.
If the mirror folds out, the motor is good. Any gears or teeth are obviously good- Id check the switch or look for a cold sodder joint. On the trucks there is a calibration/syncronization process where your supposed to fully open/close them 3 or 4 times in a row.
There is a door module that controls all that **** if the motors test out good. These mirrors all operate under the same basic principles as the other GM trucks. I'd bet wiring colors are pretty damn close to the same Try searching for some similar threads like this-
http://www.performancetrucks.net/for...08-gmc-441341/
or some of the other gm truck forums...Might give you some more insight. I think you can fix it.
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
the controls for the mirroe still work fine.. as in i can adjust the mirroe up and down, and left and right, but the folding of the mirror housing has crapped out.
from my research, there is no way to rebuild these mirrors. its simply replace the whole mirror. i have the old style one (smooth back) If you are going to replace the mirror, make sure you get the newer model ones. you can tell the new model because it will have a little raised piece of plastic that says Hummer on it. i cant explain it good, but if you look it up it is very obvious.
expect to pay about $300 for each off of ebay.
if your vehicle is still under warranty (doubtful) i think there was a recall on the mirrors or some issue that the dealerships were upgrading them.
PS.. if someone knows for a fact these mirrors can be rebuilt and can provide part #s for the motor.. please post or PM me the info.
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