What did you do to your NNBS GMT900 Tahoe/Yukon Today?

Yes I do!
Will take measurements next time..

IR thermometers are unreliable on shiny/mirrored objects.

You just saved me from blinding myself with the laser!

It worked when I did it

I'll give it a go anyway.

Seems like if i keep it perpendicular, the temp reading is stable (the mirror was ~5 degrees cooler than ambient in DIC)

If I angle it, the reading can fluctuate quickly. i was seeing about a 40 degrees swing.. thats in the shade too

It'd be a bit more effort, but you could cover the mirror surface in painter's tape and then do readings. The surface would work with the IR thermometer and the tape would be easy to remove.

Today I replaced my multifunction switch. What a pain.


I couldn't find a how-to that matched mine (most said the parts just snapped apart). So I had to get creative. The hidden male torx screw holding the top column cover was tricky to find. And performing arthroscopic electrical connector surgery to connect one of the 4 switch plugs (the one on the wire) was a challenge for my fat hands. But the icing on the cake was the screw GM located, seemingly for the sole purpose of forcing everyone to remove their steering wheel to change the switch. Thankfully, I have a mini ratchet that could just fit in there to coax the screw out.





I don't use this little guy often. But when I do it saves the day. GM gets an F. But I won the day.

the_tool_man said:

Today I replaced my multifunction switch. What a pain.


View attachment 444944I couldn't find a how-to that matched mine (most said the parts just snapped apart). So I had to get creative. The hidden male torx screw holding the top column cover was tricky to find. And performing arthroscopic electrical connector surgery to connect one of the 4 switch plugs (the one on the wire) was a challenge for my fat hands. But the icing on the cake was the screw GM located, seemingly for the sole purpose of forcing everyone to remove their steering wheel to change the switch. Thankfully, I have a mini ratchet that could just fit in there to coax the screw out.

View attachment 444945

View attachment 444946

I don't use this little guy often. But when I do it saves the day. GM gets an F. But I won the day.

Click to expand...

What a handy little set, are you missing pieces or was that for optional bits?

After looking at the umpteen threads about installing projectors in the stock housings, seeing all the aftermarket assemblies folks have been using, and going through my usual engineer "paralysis by analysis," I decided to try a different route. These are Hella 90mm (H9 65W) in a sacrificial Depo housing I'm only using for the protyping and testing. I'm only doing one side for now, but this should tell me what I need to know.

At this stage, I designed the mount plates so they could be used for either position, so they're not optimal for either position. There are two adjusters up top and one at the bottom, with the ones at the bottom being towards the middle, allowing individual access from the back side. I haven't figured out what I'm going to do about the lights not filling the existing bezel fully, but it'll likely be some kind of "sclera" in either polished aluminum or black.

We'll see how this works on a long drive I'll be doing soon.