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

[blackelky]

Ordered GM charcoal canister, purge valve and gas cap replacing parts this weekend.

 

[Doubeleive]

Ordered GM charcoal canister, purge valve and gas cap replacing parts this weekend.

don't forget the one under the hood

 

[Fless]

don't forget the one under the hood

The one under the hood IS the purge. Vent valve is in the back.

 

[Doubeleive]

The one under the hood IS the purge. Vent valve is in the back.

I always get them confused unless I go look it up..... lol
I recomend a shotgun approach, just bend over once and be done with it.
and use OEM
and oddly enough it's always this time of year when the weather changes that they crap out
just like batteries

 

[Grady_Wilson]

It's either the weather change or right before you go to get your smog check for new tags.

 

[mikez71]

Removed my audio splitter that routes rear radio outputs to front amp inputs.
I made it to get rid of annoying chimes... key in, door open.

HOWEVER, my son hit the Rear Seat Audio button. That mutes the rear output from the amp, but it also turns the radio rear output to 100%. (going to headphone jacks)
When he hit that button, the CD played FULL BLAST through the front speakers! About gave me a heart attack.

Also, updated to 2013 & 2014 knock retard settings. Should lessen the amount of timing pulled mostly.
Screenshot shows 2014 compared to 2012.
maybe 2 or 3 degrees less timing pulled for knock events.. med to full throttle upto 2500 rpms.?

I'm gonna go WAAAY faster now! (6l80 transmission tuning IS way worth it however..)

 

[j91z28d1]

did you log the knock retard to see if it was using? I kinda don't mind a aggressive timing pull.

 

[mikez71]

I did not. Have seen some knock retard in the past, upto maybe 5 degrees. Just found a log where it was 0.6 degrees pulled..
40% throttle, 2400 rpms in 1st, 35kpa.. not really in the change portion. (.6 was probably interpolated from neighboring cells)
Maybe when the weather warms up.

These are the actual values, gray areas are the updated areas that have be reduced from pre 2013 tunes.

Shouldn't matter unless you are getting that much timing pulled.
So that probably wasn't worth the programming cycle..

 

[j91z28d1]

I did not. Have seen some knock retard in the past, upto maybe 5 degrees. Just found a log where it was 0.6 degrees pulled..
40% throttle, 2400 rpms in 1st, 35kpa.. not really in the change portion. (.6 was probably interpolated from neighboring cells)
Maybe when the weather warms up.

These are the actual values, gray areas are the updated areas that have be reduced from pre 2013 tunes.
View attachment 426102
Shouldn't matter unless you are getting that much timing pulled.
So that probably wasn't worth the programming cycle..

I'm usually very conservative with timing, cause I honestly don't care about a few hp these days. these days for hp you add boost and e85 or you're just pissing in the wind. but if you did want to adjust timing, I forget if you run 87 or if you have a 6.2L. but for street tuning timing there's some good youtube videos, but basically run what fuel you're willing to pay for, all 4deg across the whole mpa and then go log timing and retard. take those logs and use the special % to pull half the retard amount out till you get logs with no timing pull, or very little. a few 0.5 deg eh.

if you want to go that deep but make sure you have your fuel, maf and ve dialed in first, they are both part of the cylinder airmass calculation. so they can actually change the point on the timing table that the values are pulled from. so fuel changes can change the timing you're running. it's very weird, but just how gm did these newer os's

 

[gooffeyguy]

Installed a Hopkins Towing dual connector 7 blade/4 pin. Picked it up at Walmart for $15 (on clearance) and is a direct fit for GM vehicles. Took about 5 minutes.

 

[Monz11]

What kind of LED taillights are these?


View attachment 425773View attachment 425774

Looks like Spyder rears

 

[Fless]

Installed a Hopkins Towing dual connector 7 blade/4 pin. Picked it up at Walmart for $15 (on clearance) and is a direct fit for GM vehicles. Took about 5 minutes.

View attachment 426162

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I used the same #40920 on my '04, PnP. Works great and easy install!

 

[blackelky]

I always get them confused unless I go look it up..... lol
I recomend a shotgun approach, just bend over once and be done with it.
and use OEM
and oddly enough it's always this time of year when the weather changes that they crap out
just like batteries

That's exactly what I'm doing. Cry once buy once OEM because i hate doing shizz twice

 

[mikez71]

if you want to go that deep but make sure you have your fuel, maf and ve dialed in first, they are both part of the cylinder airmass calculation. so they can actually change the point on the timing table that the values are pulled from. so fuel changes can change the timing you're running. it's very weird, but just how gm did these newer os's

Nope! Just saw some changes in tune, figure it's usually an update or tweak.

 

[Grady_Wilson]

Installed a Hopkins Towing dual connector 7 blade/4 pin. Picked it up at Walmart for $15 (on clearance) and is a direct fit for GM vehicles. Took about 5 minutes.

View attachment 426162

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View attachment 426165

Thanks for the heads up, just picked one up on clearance at my local Wally World.

 

[j91z28d1]

well huh.. I guess I got a bad charcoal canister from rock auto. put the old one back on a while ago, just checked today and it passed its test.




guess I'm testing how you warranty stuff from ra for the first time and 6 months after I got it lol.

 

[j91z28d1]

ha.. so it's been so long I had forgotten it looks like I got it on one of their closeouts for cheaper. I didn't realize, not that it would have mattered because I wouldn't have expected a acdelco to be bad anyways, but there's no manufacturers warranty on it.

that's my luck lol. fixing stuff that isn't broken, score what I thought was a good deal. end up replacing extra parts troubleshooting with it. then in the end put the original parts back on, out like 200$ and still worried it's going to throw charcoal into the system at some point.

haha, gotta laugh.

 

[Fless]

ha.. so it's been so long I had forgotten it looks like I got it on one of their closeouts for cheaper. I didn't realize, not that it would have mattered because I wouldn't have expected a acdelco to be bad anyways, but there's no manufacturers warranty on it.

that's my luck lol. fixing stuff that isn't broken, score what I thought was a good deal. end up replacing extra parts troubleshooting with it. then in the end put the original parts back on, out like 200$ and still worried it's going to throw charcoal into the system at some point.

haha, gotta laugh.

You'd think there would be a good place in those canisters to install some kind of screen so the charcoal can't escape, no matter what.

 

[j91z28d1]

You'd think there would be a good place in those canisters to install some kind of screen so the charcoal can't escape, no matter what.

that would be nice.. I did shake the old one while it was out and could hear it in there. the new one I couldn't hear anything. makes me wonder how long it will last.

when I looked up the part number, this new one was what replaced the old number. but the manufacturer name was totally different. I'm still a bit baffled at what could leak on a new sealed box, no cracks or anything. I've never had one apart. so maybe a chamber inside?

since I have it. maybe I'll cut it open at some point and see what's in there.

 

[blackelky]

well huh.. I guess I got a bad charcoal canister from rock auto. put the old one back on a while ago, just checked today and it passed its test.

View attachment 426230


guess I'm testing how you warranty stuff from ra for the first time and 6 months after I got it lol.

acdelco? The one I ordered says GM genuine on Rockauto. I wonder what the difference is.