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

[Sparksalot]

Currently struggling to loosen at the manifolds. Had the breaker on the one nut that is reachable without wobble adapter. Nope!
Don't want to break.. Gonna soak them. Didn't because I lost the straw on my liquid wrench.. I'll use a brush.. I'll get there eventually..
Got cleaned up so I'm taking a break now!

Thanks for all the help! Be a day or two before next update..

BTW, has anybody ever check engine load at idle on their Tech2?

Load in what regard? I’ve not done it with a tech2, but my scangauge usually shows around 16hp at idle.

 

[Doubeleive]

Load in what regard? I’ve not done it with a tech2, but my scangauge usually shows around 16hp at idle.

just engine load period, I think it shows it on my radio obd interface if I turn that pid on

 

[Grady_Wilson]

I maybe just lowering the pipe to test as j91z recommended!

I was going to gut them temporarily if clogged, but I have smog this year and dont feel like doing it twice..

The dang CARB ypipe is $2000! (or $1600 from rockauto for a ripply aftermarket one) Apparently CARB testing costs $1250 per unit! (non carb tested, carb compliant setup is ~$350)

Might be time to buy a beater backup car..

One of the great things about moving to a Free State is never having to deal with smog and CARB BS.
My Yukon had its last smog check when I bought it last year.

 

[RooTBeeRthe1st]

One of the great things about moving to a Free State is never having to deal with smog and CARB BS.
My Yukon had its last smog check when I bought it last year.

I just need an address in a free state to be happy lol

 

[Doubeleive]

Got it back finally seems to be running fine but I would be lying if I said I wasn't scared to get on it even if it doesn't need a break in period lol, going give it a couple hundred miles first.
Putting the mirror motor on that I pulled from the junkyard, tested it and it works. It is noisier than the original but I can live with that, not like I am sitting here turning the mirror in & out all day long

 

[mikez71]

What's his show?

If I remember correctly, mine shows about 13 or 15

Mine was 20%, went to 23% with AC on.

 

[mikez71]

ouch. are you up north where stuff is rushy?

if not I was going to say hit it with an impact. the shock tends to help, but if you're in the rust belt. I don't deal with that stuff and it seems to he a whole different world

Nope, I'm in sunny CARBifornia!
just dry surface rust! Easy as it gets.. shoulda been easy.. will try again tomorrow morn..

Definately considering an electric impact wrench.. when I REALLY need it.. (had one, stolen decades ago!)

 

[mikez71]

Load in what regard? I’ve not done it with a tech2, but my scangauge usually shows around 16hp at idle.

Hmm.. 16hp out of a total 320.. seems like it SHOULD be 5%!
Maybe it's 16hp compared to max power at 500rpms?

 

[Doubeleive]

AC on about 26% and AC off about 21%

 

[RooTBeeRthe1st]

AC on about 26% and AC off about 21%
View attachment 433044View attachment 433045

I'll unplug my BT DieselWorks, and plug in my Pioneer, then change a P.I.D. in the morning and check...now y'all got me curious.

 

[Doubeleive]

blackbear sent me a modified tune about 3 weeks ago to turn off p0420/p0430 because one of the cat's is bad and went to finally flash it and......
fukaduk they sent it for the silverado,,,,,, @BlackBearPerf leaving on Friday for a 1400+ mile road trip
crossing my fingers they can get it to me tomorrow, lol fat chance

 

[j91z28d1]

Nope, I'm in sunny CARBifornia!
just dry surface rust! Easy as it gets.. shoulda been easy.. will try again tomorrow morn..

Definately considering an electric impact wrench.. when I REALLY need it.. (had one, stolen decades ago!)

the youtube channel called torque test channel has really good reviews on different impacts. one of the few that test well for real world use, and tests cheap as well as high end.


off the top of my head for cordless money doesn't matter there's a snap on that's good and a Dewalt that has like a built in v-tech that does well. the red stuff is always pretty good, because the battery crosses to 100 different useful things. if you don't car about battery corss and only want a good bang for the buck, I think it's a craftsman. Just a rebrand from someone else, but hits hard for cheap.

they do test some corded ones, but not great as well as a few cheap Amazon China stuff that aren't horrible. especially for the price.


my 2 cents for impacts is the same as my advice for TV size. always go bigger then you think you'll need. you'll never regret it after the money hit passes. but it will be annoying everytime you pick it up and it. doesn't break the bolt.

that said I'm an Ingersoll fan boy. ha

 

[Charlie207]

the youtube channel called torque test channel has really good reviews on different impacts. one of the few that test well for real world use, and tests cheap as well as high end.


off the top of my head for cordless money doesn't matter there's a snap on that's good and a Dewalt that has like a built in v-tech that does well. the red stuff is always pretty good, because the battery crosses to 100 different useful things. if you don't car about battery corss and only want a good bang for the buck, I think it's a craftsman. Just a rebrand from someone else, but hits hard for cheap.

they do test some corded ones, but not great as well as a few cheap Amazon China stuff that aren't horrible. especially for the price.


my 2 cents for impacts is the same as my advice for TV size. always go bigger then you think you'll need. you'll never regret it after the money hit passes. but it will be annoying everytime you pick it up and it. doesn't break the bolt.

that said I'm an Ingersoll fan boy. ha

Team Red all the way.

 

[89Suburban]

DEWALT

 

[Charlie207]

DEWALT

DeWilt?

 

[Geotrash]

Harbor Freight!

 

[RooTBeeRthe1st]

Mine was 20%, went to 23% with AC on.

AC on about 26% and AC off about 21%
View attachment 433044View attachment 433045

Didn't check with the AC on, but Park vs Drive didn't matter.

EDIT: AC on, 23%

Also found this little guy staring at me under the back seat this morning, looks like I need to clean under there.

 

[mikez71]

Thanks for that!
Guess at idle it's maybe not too bad...
If it's bogging from a stop, maybe around 1000+ rpms under load might show some difference? (never tested mine driving)

My one exhaust nut that's easy to reach broke loose..
still tight/creaking backing out a couple turns so I'm applying more liquid wrench..

Really need short sockets (15mm) for the exhaust manifold to pipe! (or 19/32"!) Can't reach but the one, so even if I had an impact I'm useless!
Think I'm buying a backpressure gauge and drill a couple small holes... Probably should get some short 1/2" sockets anyways..

 

[Sparksalot]

I still need to figure out which louvers I want on mine and get them and do that...
Temps are already ridiculous.
And just recently, my underhood blanket fell apart so I ripped it out.

I ditched the hood insulation for both of mine. I want heat rejection not retention.

I’m still contemplating the louver on thethirdtwin. I had a H3 piece in mind, but it was back ordered. Now the price jumped up by $100.

 

[Doubeleive]

Thanks for that!
Guess at idle it's maybe not too bad...
If it's bogging from a stop, maybe around 1000+ rpms under load might show some difference? (never tested mine driving)

My one exhaust nut that's easy to reach broke loose..
still tight/creaking backing out a couple turns so I'm applying more liquid wrench..

Really need short sockets (15mm) for the exhaust manifold to pipe! (or 19/32"!) Can't reach but the one, so even if I had an impact I'm useless!
Think I'm buying a backpressure gauge and drill a couple small holes... Probably should get some short 1/2" sockets anyways..

I thought a back pressure test was done thru the 02 sensor hole?