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

[gooffeyguy]

So these come with gaskets installed behind the manifolds? I got one broke off on the pass side front.




View attachment 432492View attachment 432493

Yes OE uses a MLS (multi layer steel) gasket there. They make other types of gaskets to use but I'd stick with OE.

That bolt looks like my drivers rear bolt. I plan on removing all bolts and if need be the ones at the collector/Y-pipe to get enough room to tack weld a nut over what's left of the bolt. The heads are aluminum and these bolts shouldn't be torqued too tightly (15-18 ft lb) but they corroded due to different metals. Ya know, that steel into aluminum thing happening.

 

[89Suburban]

I have heard of no exhaust manifold gaskets working in some cases.. ('88 turbocoupe)
and it sounds like coppercoat on the headgasket is a common enough..

But I always get new gaskets on everything cause I'm a scaredy cat.

Looks like gasket there? (If you were asking?)
View attachment 432496

Yeah I see it now

 

[gooffeyguy]

Hey @Doubeleive and @j91z28d1

With your Morimoto headlight install, did you re-use the incandescent turn signal or did you opt to install a GTR Lighting switchback?

 

[j91z28d1]

I used the normal bulbs.

the switch backs would probably be cool but I wasn't sure which ones to buy at the time. then forgot about them haha.

 

[Doubeleive]

Hey @Doubeleive and @j91z28d1

With your Morimoto headlight install, did you re-use the incandescent turn signal or did you opt to install a GTR Lighting switchback?

I use a amber LED and resistors, thought about switchbacks but they seem unreliable atleast that's what I gathered from poking around
getting the resistor wired correctly was a hoot

 

[gooffeyguy]

I used the normal bulbs.

the switch backs would probably be cool but I wasn't sure which ones to buy at the time. then forgot about them haha.

I use a amber LED and resistors, thought about switchbacks but they seem unreliable atleast that's what I gathered from poking around
getting the resistor wired correctly was a hoot

So does the turn signal bulb stay lit when the headlights are on, and just flashes when turning? Or is that just when using the switchbacks?

 

[j91z28d1]

mine works like a normal turn signal. Just blinks when turns on.

I think the switch backs stay on white and then turn orange when used?

the led highlight around the outside just taps into a key on power, so it is on any time the key is on. I think it might dim some when the headlights come on? but I don't remember forsure. newer cars I notice the white highlight turns off when the turn signal is on, I believe to help take your attention to the flashing orange instead of the white but these don't do that.

 

[Doubeleive]

So does the turn signal bulb stay lit when the headlights are on, and just flashes when turning? Or is that just when using the switchbacks?

yes it is dual operation, running light/signal light

 

[Doubeleive]

these are the bulbs I have used, super reliable I don't think I have had to replace one in over 5 years, I was running these previous to the morimotos, they are pretty bright as well

7443 7440 7444 LED Amber Yellow Front Real Turn Signal Parking DRL Light Bulbs | eBay

2X 50W 7443 LED Amber Yellow Turn Signal Parking DRL High Power Light Bulbs. Feature 7443 Amber Yellow. -Light color: Amber/yellow. The note there will NOT be read. â Projector Lens. 923 lm/bulb. â Projector Lens.

www.ebay.com

 

[Doubeleive]

When I find a light I like I always buy spares because sometimes they stop making them or change design, but I haven't had to use these yet I have 2 extra sets