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

[j91z28d1]

87 is about the price here but always seems to be over a dollar jump to 93 which feels like a scam.

 

[Doubeleive]

I got some e85 @3.69 though, stupid p0460 code came back about a month after installing new 02 sensors, so must be shitcat, can't see it being anything else truck runs like new

 

[j91z28d1]

is it p0460 or p0430?

I just took a look at a diag doc and holy crap what a complex code to set. I was going to ask if you can graph and see the difference left to right, but I see now it's way deeper than that.

I know it's California, but would it know if you just unchecked report fail in hptuners for the rear o2s? if they are bit in the low efficiency side, it really would hurt anything if they aren't testing at the tail pipe?

 

[Doubeleive]

is it p0460 or p0430?

I just took a look at a diag doc and holy crap what a complex code to set. I was going to ask if you can graph and see the difference left to right, but I see now it's way deeper than that.

I know it's California, but would it know if you just unchecked report fail in hptuners for the rear o2s? if they are bit in the low efficiency side, it really would hurt anything if they aren't testing at the tail pipe?

p0460, blackbear has offered to just turn it off (i have there tune) i just don't know if it would make the computer show unready or not.
otherwise my options are another cat @ around $600, which will have to wait until after christmas, sometime next year

 

[j91z28d1]

huh. mine doesn't have a p0460 code listed and cat efficiency is 30. must be a hybrid thing, we do have a one off ecm. I thought the codes were standardized thou.

from I read the test is run during a lean dfco of atleast 2.3sec and it looks at the response time when forced rich during a test. not that that does you any good but yeah. no clue if turning it off keep it from running all it's emissions redness stuff. a quick Google search and wow, yeah. Lotta people saying different stuff. some seem to say you can do it, others say it won't show ready but some places it's OK to have one system show up as not ready.

that's a delima forsure.

 

[salisburyv]

In my little sh!thole state, all monitors must be set. and wouldn't you know it 2 weeks before my sticker was up.... here comes the CEL. Then, once i was told what it would take to fix the light, i was also told i needed lower ball joints both sides. MAF, both LBJs, inspection, tire internal patch(repair), lifetime alignment, engine re-calibration (E85 update). my value was fluctuating between 3-36. i have never put E85 in it. $1695 i thought it was a little high. But they warranty the repairs 2yrs/24k.

now, having said all that. The truck ran flawless, both engine wise and suspension wise. i did new links and bushings too. no shaking at all to 80mph. like glass. it was never this good so overall i'm happy with it. My ass does hurt a bit tho...

 

[Grady_Wilson]

Got tagged $340 for a new windshield.
Less than I expected.

 

[avalonandl]

Gotta pay for the teeth and hair somehow...

View attachment 416622

He must get hair gel by the gallon...

 

[RooTBeeRthe1st]

In my little sh!thole state, all monitors must be set. and wouldn't you know it 2 weeks before my sticker was up.... here comes the CEL. Then, once i was told what it would take to fix the light, i was also told i needed lower ball joints both sides. MAF, both LBJs, inspection, tire internal patch(repair), lifetime alignment, engine re-calibration (E85 update). my value was fluctuating between 3-36. i have never put E85 in it. $1695 i thought it was a little high. But they warranty the repairs 2yrs/24k.

now, having said all that. The truck ran flawless, both engine wise and suspension wise. i did new links and bushings too. no shaking at all to 80mph. like glass. it was never this good so overall i'm happy with it. My ass does hurt a bit tho...

You'll have that on those big jobs

 

[RooTBeeRthe1st]

p0460, blackbear has offered to just turn it off (i have there tune) i just don't know if it would make the computer show unready or not.
otherwise my options are another cat @ around $600, which will have to wait until after christmas, sometime next year

Have you gotten smog tested while having a tune?

 

[Doubeleive]

Have you gotten smog tested while having a tune?

yes and no
I originally had a hypertech tune (carb compliant)
the hypertech when installed gets married to the ecm & tcm
had the transmission upgraded and forgot to remove the hypertech first
transmission came with a new tcm, so this made the hypertech think it is no longer married and basically is a brick
so I got the bb tune and the stock file is now the hypertech tune
last time I got it smogged I removed the bb tune it put it back to the hypertech
passed no problem.

 

[iamdub]

Unless they look at more stuff or look deeper in CA, I never had a problem passing with my rear O2 codes turned off. All readiness monitors set just fine.

 

[gooffeyguy]

Unless they look at more stuff or look deeper in CA, I never had a problem passing with my rear O2 codes turned off. All readiness monitors set just fine.

But..... don't you get your stickers from a buddy? When was the last smog test you've done?

 

[iamdub]

But..... don't you get your stickers from a buddy? When was the last smog test you've done?

Only the past two years. Had O2s and other things turned off in '17, so I've passed four emissions inspections with it, the final one in '21 with it cammed/modded with no cats. No visual inspections here although that's easy enough to pass. I don't believe they've changed anything in the testing.

 

[justchecking]

I changed the four driver side plugs at 50k miles. I recently changed plugs in my older daughters Escape and younger daughters Wrangler at 100k miles and they were severely worn, like no electrode remaining so I decided to start changing all plugs at 50k. I changed the driver side in nothing flat. Then I looked at the passenger side. I only had an hour and a half to change those four plugs, eat lunch, and go to my eye appointment. So… those will have to wait.

 

[j91z28d1]

Unless they look at more stuff or look deeper in CA, I never had a problem passing with my rear O2 codes turned off. All readiness monitors set just fine.

this is the ticket. what software was used to turn off the rear o2? seems readiness is the key.

since I have hp on the truck already, I'd definitely try that before replacing a cat and see what happens cause it would be eazy to turn back on. I don't know if bb it would cost you money to try

 

[j91z28d1]

I changed the four driver side plugs at 50k miles. I recently changed plugs in my older daughters Escape and younger daughters Wrangler at 100k miles and they were severely worn, like no electrode remaining so I decided to start changing all plugs at 50k. I changed the driver side in nothing flat. Then I looked at the passenger side. I only had an hour and a half to change those four plugs, eat lunch, and go to my eye appointment. So… those will have to wait.

I suggest a koken plug socket

https://a.co/d/g5oQSS9

and of all things harbor freight has a black extension set that has this little like 1 and half in extension, that and a flex head ratchet I've used that little extension more times than I can count. but if I remember right that's what I used and it wasn't to bad and mine has a big hybrid inverter over there in the way.

 

[iamdub]

this is the ticket. what software was used to turn off the rear o2? seems readiness is the key.

since I have hp on the truck already, I'd definitely try that before replacing a cat and see what happens cause it would be eazy to turn back on. I don't know if bb it would cost you money to try

HPT. Had a shop turn off AFM, the speed governor and the rear O2s cuz I was planning on long tubes eventually. Passed emissions multiple times after. Had it tuned again for the cam and mods and it passed that one time I had it inspected after that. If it weren't for the tint, I'd still be getting and passing legit inspections.

 

[Fless]

I changed the four driver side plugs at 50k miles. I recently changed plugs in my older daughters Escape and younger daughters Wrangler at 100k miles and they were severely worn, like no electrode remaining so I decided to start changing all plugs at 50k. I changed the driver side in nothing flat. Then I looked at the passenger side. I only had an hour and a half to change those four plugs, eat lunch, and go to my eye appointment. So… those will have to wait.

@Rocket Man has an easy setup and you probably already have the tools needed:

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

Erasers are IPC-J-STD-001 what I always use IPC-J-STD-001?:crazy:

www.tahoeyukonforum.com

 

[RooTBeeRthe1st]

yes and no
I originally had a hypertech tune (carb compliant)
the hypertech when installed gets married to the ecm & tcm
had the transmission upgraded and forgot to remove the hypertech first
transmission came with a new tcm, so this made the hypertech think it is no longer married and basically is a brick
so I got the bb tune and the stock file is now the hypertech tune
last time I got it smogged I removed the bb tune it put it back to the hypertech
passed no problem.

Darn, I was hoping you were going to say you had the BB tune and it passed no problem.