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

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iamdub

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Replaced the rear liftgate window switch in about a minute thanks to a video a member on here made some time back. Bought a fuel rail adapter and an ethanol test kit (little beaker style bottle) to check the actual alcohol content of my fuel. Last time at the station, the content dropped 20% into the 40s and it should have at least been in the 70s. Either we're getting cheated or the computer got a math problem wrong.

Deets on the fuel rail adapter? Do you have to remove the valve core? When I tested mine, I removed the core and slipped a length of EFI hose over the port. Had the hose routed into a clean bottle and turned the key on for about half a second. I'd like to not have to remove the core- don't wanna wear it out and have a fuel leak.
 

iamdub

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I was out and about today in the yukon and as I was walking up to to it from across the parking lot I noticed the left side looked lower than the right and sure enough measuring at the wheels both front and rear is 1/2" lower on the left, wth? I measured the front first and thought maybe a bad strut or something could be the problem but it's on the rear also
any ideas? how would I correct it? I have the z55 and everything is working fine. tire pressure is within .2/10'th. gas is at about 2/3rd's

As the other's said, it's the "Chevy Lean" or "GM Lean". It's not so noticeable until you lower a vehicle. When I lowered mine, I left a spacer ring in the left side strut drop it 1/2" less than the right side to level it left-to-right. It'll vary 1/8" or so after driving and when parking on even slightly sloped surfaces.
 

cmatt

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Who manufactures the O2 sensors for ACDelco?

With 136k on the clock, thinking it might be time to replace as PM. Amazon has the ACDs for approx $47 each. Denso is approx 30-37 each.


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swathdiver

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Deets on the fuel rail adapter? Do you have to remove the valve core? When I tested mine, I removed the core and slipped a length of EFI hose over the port. Had the hose routed into a clean bottle and turned the key on for about half a second. I'd like to not have to remove the core- don't wanna wear it out and have a fuel leak.

No, it depresses the schrader valve as you screw it on. There was enough fuel under pressure to fill it up the bottle if it hadn't all leaked out as the hose was too big, needed 5/32 but only had 3/8" and big tie straps. Not enough to squeeze it down. Anyway, will try again later after a trip to Home Depot.

If there's not enough fuel and or pressure, we'll use the Tech-2 to turn the fuel pump on and off until the beaker is full.

https://www.amazon.com/gp/product/B078R8Q6CD/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

71nLGVlVSTL._AC_SL1500_.jpg

FYI: This is two pieces, the barbed end with the schrader valve depressor slips into the knurled and threaded fitting.
 

Tiki

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Anyone know Of a reputable mirror replacement? Only found TRQ so far and have never heard of them.
 

cmatt

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Who manufactures the O2 sensors for ACDelco?

With 136k on the clock, thinking it might be time to replace as PM. Amazon has the ACDs for approx $47 each. Denso is approx 30-37 each.


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Anyone? @swathdiver


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