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

[tuckerrnr1]

Hope I'm wrong... but I think your exhaust was doing the defrosting.

It should be several horizontal lines if from the defroster.

 

[Charlie207]

Hope I'm wrong... but I think your exhaust was doing the defrosting.

I'll try again in the morning, lol.

 

[Charlie207]

It should be several horizontal lines if from the defroster.

After 10 mins, with a light frost? I'd imagine the entire center section would be warmed up by that point.

I'll bust out the multimeter to double-check.

 

[tuckerrnr1]

I hope it is working for you. Nice feature to have.

 

[Doubeleive]

It was a balmy 30°F this morning, so I opted to use the remote start while I pulled my suspenders on, and when I came out I noticed the rear defroster had been doing defroster stuff.

This was weird, because as long as I've owned the rig the rear defroster hasn't worked. I tested for continuity, blown fuses, relays, corroded connections, and/or signs that any ROUSes had munched on anything, but it all checked out fine.

I'll take the small victories.

View attachment 470995

NYET

 

[Doubeleive]

I believe the defrost wires should have around 5v when enabled
the two connectors on the glass should have continuity (any break in the thin film wire on the glass will make it not work, repairable)
not 100% sure but if the side view mirrors are not connected or working then the rear may not work as well
because the whole thing may operate in a loop, if you do not get voltage on the rear connectors then check the mirrors.

 

[Scrappycrow]

This time, I went with their Premium Full Synthetic Extended Performance.

Is this what you used? https://www.valvolineglobal.com/en/extended-protection-flexfill-full-synthetic-gear-oil-sae-75w-90/

 

[Charlie207]

Hope I'm wrong... but I think your exhaust was doing the defrosting.

Now that I think of it... that exhaust fires out of the tailpipe with authority, and I bet it doesn't even come close to the rear window.

 

[LSCALADE]

I found a nice new (amazon return) headlight set up that I decided to mess with and if I destroy them oh well they were 60$. Always wanted to experiment with Bi-LED projectors and here is the results. Quite unexpected how well they turned out.

 

[j91z28d1]

I found a nice new (amazon return) headlight set up that I decided to mess with and if I destroy them oh well they were 60$. Always wanted to experiment with Bi-LED projectors and here is the results. Quite unexpected how well they turned out.

View attachment 471053

View attachment 471052

that's a beautiful cut off.


the blue line is what the head light mod guys look for. there's some BMW projector that does it very well. that's nice, and bi-led is the way to go on everything. fog lights and all.

 

[mikez71]

Now that I think of it... that exhaust fires out of the tailpipe with authority, and I bet it doesn't even come close to the rear window.

Ehh.. How far away can idle exhaust be from the truck?
Might depend on the wind..

 

[LSCALADE]

that's a beautiful cut off.


the blue line is what the head light mod guys look for. there's some BMW projector that does it very well. that's nice, and bi-led is the way to go on everything. fog lights and all.

I spent probably around 10 years modifying all the old school HID systems and did countless lens swaps, always chasing the razor sharp and level cutoff beam with beautiful flicker and you can just never get one side the same as the other. On the last headlight set I decided to run them as received, they are DEPO so good light set and the projector is superior to the OEM one but it lacks the width and the color so I never thought I would install something generic off Amazon and be extremely happy with the total package and most importantly what you see at night when it matters.

Now there are even more superior projectors that cost north of 300$ but for a cheap starting experiment this turned out fantastic. The ease of installation makes me want to retrofit some Yukon or Suburban headlights next. I will be building V2.0 with the set of DEPO lights I removed from the Escalade and possibly hunting for some other versions with Built in DRLs for my next V3.0 build. I will probably sell these as I swap them out.

 

[91RS]

Why do people like the “razor sharp” cut off line? The Morimoto projectors I used on our old Yukon had that and I hated it, it was pitch black above it at night and you couldn’t see anything. I thought it was very unsafe.

 

[LSCALADE]

Why do people like the “razor sharp” cut off line? The Morimoto projectors I used on our old Yukon had that and I hated it, it was pitch black above it at night and you couldn’t see anything. I thought it was very unsafe.

100% agree with you, most people hate it, especially when the lights are lowered substantially but if they are raised up to reach a long distance you can do so without blinding people and plus you get to watch that sharp line bounce off street signs and white objects, but yes the fuzzy cutoff is preferred by everyone.

These projectors that I installed blurred some in the distance but the light changes to purple and blue so its not just sharp stop of light.

 

[mikez71]

I have a blurry cutoff..

Either I adjust it higher and beam oncoming a little bit, and it helps light up signs..
Or I adjust it lower, but then it's dim where I need the light (horizon).

 

[j91z28d1]

Why do people like the “razor sharp” cut off line? The Morimoto projectors I used on our old Yukon had that and I hated it, it was pitch black above it at night and you couldn’t see anything. I thought it was very unsafe.

simply to get as much light out of them as possible without blinding oncoming traffic. without a clean cut off like the old halogens, you either get poor light over all, or blind people if you increase light output. if you live in a hilly area, that mostly all goes out the window. since you're blinding everyone up hill and can't see crap down hill no matter what.

today's cars having moving lights are really the way to go. I drove a buddy's vw suv thru the tight mountain roads of deals Gap at night a month or so ago and it kinda made me want to burn everything I own to the ground and start over haha. fak.

I'm kinda disappointed there's no retrofit moving projectors yet. I was trying to think up a way to have at least my fog light projectors move right and left with steering using some rc servos. wouldn't do up and down but at least seeing thru corners would be nice.

 

[j91z28d1]

I have a blurry cutoff..

Either I adjust it higher and beam oncoming a little bit, and it helps light up signs..
Or I adjust it lower, but then it's dim where I need the light (horizon).

my oem volt projectors have some dimples, looks like golf ball in the lens so that it casts some light up to see interstate signs. nice, but also. makes them a bit glare to on coming cars on rainy nights. but they arw oem and not modded, so eh. what can ya do.

 

[mikez71]

My buddy was telling me about some headlight that blocks light to oncoming traffic.. when it senses cars I guess?..
Too complicated for my tastes, though it sounds like it works..

 

[Charlie207]

Ehh.. How far away can idle exhaust be from the truck?
Might depend on the wind..

It honestly blows the grass down at idle, so its not moving vertically up to the glass, and certainly not quickly enough to evenly melt the ice all at once.

https://imgur.com/Hh5hHpc

But fear not! I like science, and brought receipts:

There was continuity between the two terminals on the glass, so no broken pathways for the electrons. And then I measured for voltage to the rear so I could remote start the truck and observe.

https://imgur.com/7qBI2LU

So, it quite possibly healed itself, as there was no rear-defroster working previously.

 

[91RS]

simply to get as much light out of them as possible without blinding oncoming traffic. without a clean cut off like the old halogens, you either get poor light over all, or blind people if you increase light output. if you live in a hilly area, that mostly all goes out the window. since you're blinding everyone up hill and can't see crap down hill no matter what.

today's cars having moving lights are really the way to go. I drove a buddy's vw suv thru the tight mountain roads of deals Gap at night a month or so ago and it kinda made me want to burn everything I own to the ground and start over haha. fak.

I'm kinda disappointed there's no retrofit moving projectors yet. I was trying to think up a way to have at least my fog light projectors move right and left with steering using some rc servos. wouldn't do up and down but at least seeing thru corners would be nice.

Maybe I just don’t have them adjusted up high enough then. It didn’t seem like I could go much higher without blinding all oncoming traffic. We did occasionally get high beamed when cresting hills but that’s just physics.

My XTS has the headlights that move side-to-side, they’re nice, but I feel like the ones that adjust up and down would be significantly better. My friend’s Lexus has that but I’ve never been in it at night to see how it is.