Randeez 2012 Budget Yukon Denali Build (stick on hood scoops galore)

[randeez]

anyone have any idea what this thing wants to see? it is (was) in the vacuum brake booster, swapped to hydroboost last go round . i assumed it just wanted to see vacuum so i hooked it back up to vac source. but last time it was running after driving for about 5 minutes the stabilitrac and abs would error out and disable itself.

 

[Doubeleive]

anyone have any idea what this thing wants to see? it is (was) in the vacuum brake booster, swapped to hydroboost last go round . i assumed it just wanted to see vacuum so i hooked it back up to vac source. but last time it was running after driving for about 5 minutes the stabilitrac and abs would error out and disable itself.

no but if you have a tech2 and unplugg it and then run a diagnostic it should at least tell you what it is, or look up the part number on it and try and find out that way. where was it located kind of looks like it might be the fluid level sensor, if it is the fluid level sensor you should be able to just leave it out/unplugged

 

[Chert_Detective]

You're talking about Stapleton42 right?

That's the one

Yea I dont think theres going to be anyway to avoid breaking those, I havent had any problems with driveshaft (yet) but being shorty and having true awd transfercase(ie front wheels not locked with rear wheels) I'm hoping will help. Its almost like leaving them sacrificial is better imo than breaking the trans every couple months

What were you running ET wise when you were NA? Seems like you had some pretty good luck at the track but I couldn't figure out for sure what your setup back then was.

 

[randeez]

got down to pretty consistent 12.9-13@106mph 1.7 60's

 

[Chert_Detective]

That was with stock heads and intake manifold though right? What about gears/converter, fuel?

Just trying to judge the ball park of where I'll end up. You're the closest comparison I have haha

 

[randeez]

stock heads with springs, stock truck manifold.

i did the cam/278mm converter/headers and tune, adjustable rear shocks and it got down to 13.5-.6, at that point I did:
4.11 gears, 4" exhaust, 90mm throttle body, the rest of the airraid intake (big filter/shield) and gained absolutely nothing lol
swapped the converter out to a billet triple disc 258mm and it started dropping times again.

 

[Chert_Detective]

Ah okay, I just have the 3200-3400 258mm single disc. I suppose if I don't like it I can yank it out and see about a core/upgrade credit like I read about what they did for you.

 

[Onebad1983]

That's the one

What were you running ET wise when you were NA? Seems like you had some pretty good luck at the track but I couldn't figure out for sure what your setup back then was.

I have met him in person and he's a really humble guy. He's learned a lot from everything he's done and he even let me sit in the LSXcalade!

 

[randeez]

no but if you have a tech2 and unplugg it and then run a diagnostic it should at least tell you what it is, or look up the part number on it and try and find out that way. where was it located kind of looks like it might be the fluid level sensor, if it is the fluid level sensor you should be able to just leave it out/unplugged

its the check valve that goes into the vacuum booster itself, hose runs to the back of the intake. I checked it with a multimeter hoping it was just a simple switch to let it know what position the check valve was in but not the case. three pins in it, across one pair of them is like 4800ohms across the other is like 5400ohms with no changes as you manipulate the check valve- i cant imagine it reads pressure like the map sensor as well but who knows. the check valve in it isnt spring loaded or anything it can be sucked/blown into with position (open/close) and stays there. i found a welding rod cap that fits it real tight so i am just going to try and move it to either position and see if it works. will borrow friends scan tool and see what the actual fault im getting the code for also could be unrelated all together

 

[randeez]

Nothing good in the mail today...waiting on coil mount and catch can fittings