I keep hearing it's the solder joints.
I fact, I re-soldered mine a couple years ago and it stopped malfunctioning
until a few months ago. Coincidence?
What prompts the question is that the parts guy where I just bought the
replacement said that they're selling the same flawed board and that "GM hasn't
figured out how to fix the problem yet". Sounds fishy to me - circuit boards
aren't exactly new technology....
When changing mine out, I noticed two things:
1) The boards looked different. The new board was uniformly green. The old
one was half white (raw board, no coating at all) and half red - apparently
dipped in something that covered the components and joints on that half of the
board. Looks like somebody just dipped half the board into a pot of melted red
2) The installation instructions call for a bead of sealant around the cover
plate. No such bead was evident on the old factory-installed plate. Some
sort of catch-up/fix-up in hopes of mitigating the sloppy board?
Just to rant a little - There were so many other failures by this vehicle that
the wiper board seems like just more of the same....And if they *really*
upgraded the new boards in all these years (as they apparently haven't done with
the valve body on the 4L60E transmission...) I've got to wonder.
I sure wouldn't want to hear anybody at GM whining when they start getting their
lackadasical butts kicked by Nissan's Armada and Titan...
I'm tempted to overnite-Fedex the old board to one of the GM bigwigs - hoping
that somebody at that level actually cares and might even see it instead of some
flunky throwing it in the trash and sending me a form letter.
But who and where?