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

[George B]

I just had a minute before I had to come back in and feed the dogs. It was my first time in the body module, so I was just banging around. I can confirm that while the blower seems to correlate with regard to blowing harder as percentages go up, the aux temps seemed to be reversed. My temp goes from 100% at 60F to 22% at 90F. I didn't have time to figure out how to command things from the Tech 2, so that was just display reactions to manual inputs on the rear head.

Thanks!

 

[Doubeleive]

Will your Tech 2 read your current calibrations? You could probably enter your VIN here https://tis2web.service.gm.com/tis2web/ to see the calibration history and availability, and check those against what your scanner tells you is currently being used.

Yes you can check it that way also

 

[George B]

Will your Tech 2 read your current calibrations? You could probably enter your VIN here https://tis2web.service.gm.com/tis2web/ to see the calibration history and availability, and check those against what your scanner tells you is currently being used.

I went there with my VIN and confirmed I have all three current calibrations. I was able to read them from the module with my Tech2.

 

[George B]

I confirmed the rear temp door operation counts go lower for heat and higher for cooling. This is opposite what the tech2 commands for heat and cool for the rear. The front follows as expected and goes hot or cold as commanded by the tech2. As I select higher or lower temperatures on the truck display the rear actuator follows the front ones. What I did note is that the rear mode door will dwell somewhere in the middle and move air flow to the lower vents as the call for heat increases and move towards the upper vents as it decreases. This is while the front mode remains to the floor.
When the temperature is satisficed it blows gently out of both but is just a little cool. All these operations performed in AUTO. Manual control results in all expected results from all controls.

 

[George B]

I confirmed the rear temp door operation counts go lower for heat and higher for cooling. This is opposite what the tech2 commands for heat and cool for the rear. The front follows as expected and goes hot or cold as commanded by the tech2. As I select higher or lower temperatures on the truck display the rear actuator follows the front ones. What I did note is that the rear mode door will dwell somewhere in the middle and move air flow to the lower vents as the call for heat increases and move towards the upper vents as it decreases. This is while the front mode remains to the floor.
When the temperature is satisficed it blows gently out of both but is just a little cool. All these operations performed in AUTO. Manual control results in all expected results from all controls.

One other thing I noted was that there was only an asterisk by the Rear Ambient Temp Sensor, no value shown. I don't see an ambient sensor further back in the truck

 

[wsteele]

One other thing I noted was that there was only an asterisk by the Rear Ambient Temp Sensor, no value shown. I don't see an ambient sensor further back in the truck

I just finished trying to replicate your results and when I finally started to figure out the navigation, my results are the same as yours exactly, including the * for the RATS.

I did try to change the Ambient temp display and it said I had the wrong model. I suspect the 2007 doesn't support displaying Ambient Temp on the head.

I think I will put this thing down for a month or so. It is going to be a major time sink and there is going to be a lot of basketball on TV.

 

[George B]

I just finished trying to replicate your results and when I finally started to figure out the navigation, my results are the same as yours exactly, including the * for the RATS.

I did try to change the Ambient temp display and it said I had the wrong model. I suspect the 2007 doesn't support displaying Ambient Temp on the head.

I think I will put this thing down for a month or so. It is going to be a major time sink and there is going to be a lot of basketball on TV.

Thank you so much for taking the time to try and replicate my findings!

 

[wsteele]

Thank you so much for taking the time to try and replicate my findings!

Wish I could understand what it all means, but the air blew through the vents exactly as you described when switching from hot to cold on the commands.

 

[iamdub]

I don’t understand why they call it “Professional” when it’s the low grade line. Seems like if a guy sees professional it should be better than original.

It's for the professional installer, as in a mechanic shop. It's a way to get a cheaper part but sell it to the customer as a "Genuine AC Delco" part. I wouldn't say they're "low-grade", but they tend to be "lower-grade". The "Advantage" line is the cheap shit. It's advantageous for the shop and customer to have the cheapest cost part but not feel bad about it cuz it's "AC Delco".

It seems that AC Delco uses the better aftermarket parts for their Professional line. For example, my AC Delco Professional upper and lower control arms were re-boxed Moog CK series. There are plenty of other examples of this, such as with the hub bearings.

 

[Rocket Man]

It's for the professional installer, as in a mechanic shop. It's a way to get a cheaper part but sell it to the customer as a "Genuine AC Delco" part. I wouldn't say they're "low-grade", but they tend to be "lower-grade". The "Advantage" line is the cheap shit. It's advantageous for the shop and customer to have the cheapest cost part but not feel bad about it cuz it's "AC Delco".

It seems that AC Delco uses the better aftermarket parts for their Professional line. For example, my AC Delco Professional upper and lower control arms were re-boxed Moog CK series. There are plenty of other examples of this, such as with the hub bearings.

Oh yeah I forgot about the Advantage line. That’s the one they have to compete with the cheap aftermarket parts. Moog has that type of line too, can’t remember what they call it but they admit they created it to compete with the low cost aftermarket stuff so they don’t lose all that part of the market. I never buy the mid or low grade parts period. It’s not worth my time to install that stuff.

 

[Doubeleive]

One other thing I noted was that there was only an asterisk by the Rear Ambient Temp Sensor, no value shown. I don't see an ambient sensor further back in the truck

that is why mine wasn't working properly, it kept looking for the rear temp sensor which doesn't exist, now it just ignores it and works properly, if you did have a rear temp senor it would be in the headliner drivers side near the rear hatch. I only found that out after paying that stupid ask.com or whatever the hell it is and getting a diagram that came off a amazon server which went into the oblivion of pdf files on my pc lol.

 

[iamdub]

Oh yeah I forgot about the Advantage line. That’s the one they have to compete with the cheap aftermarket parts. Moog has that type of line too, can’t remember what they call it but they admit they created it to compete with the low cost aftermarket stuff so they don’t lose all that part of the market. I never buy the mid or low grade parts period. It’s not worth my time to install that stuff.

In Moog's suspension (and maybe steering?) parts, the RK line is the cheap stuff. I guess, in some ways, the CK/Problem Solver line could be better than factory if it actually does solve factory design flaws. Like you said- if the part failing would leave you stranded, then it's not worth risking.

 

[Rocket Man]

In Moog's suspension (and maybe steering?) parts, the RK line is the cheap stuff. I guess, in some ways, the CK/Problem Solver line could be better than factory if it actually does solve factory design flaws. Like you said- if the part failing would leave you stranded, then it's not worth risking.

That’s it, the RK line. They said it’s priced to be competitive with the Chinese parts basically.

 

[LowBurb13]

I spent 2 days debadging, polishing and replacing the Bowties with billet. Waiting on a couple parts I removed to have resprayed coming back tomorrow. Also waiting on 24x10 DUB Ballers to show up any day. Leaving for 2 weeks in Florida next week hoping everything gets here before then. Will post pics when I get it done.

 

[George B]

Speaking to the tool kit comments. I decided that my plug kit should be in my truck not in the drawer in my shop. Scored this little bag at the local Goodwill.

View attachment 273078 View attachment 273079

 

[kbuskill]

It's for the professional installer, as in a mechanic shop. It's a way to get a cheaper part but sell it to the customer as a "Genuine AC Delco" part. I wouldn't say they're "low-grade", but they tend to be "lower-grade". The "Advantage" line is the cheap shit. It's advantageous for the shop and customer to have the cheapest cost part but not feel bad about it cuz it's "AC Delco".

It seems that AC Delco uses the better aftermarket parts for their Professional line. For example, my AC Delco Professional upper and lower control arms were re-boxed Moog CK series. There are plenty of other examples of this, such as with the hub bearings.

Speaking of all this "Professional" line stuff.

I wasn't happy with the Strongarm brand of liftgate struts that I installed back in December on the Burb.

When it was cold out the power liftgate would get almost all the way to the top/fully open, and then would reverse and start coming back down as though it had encountered an obstacle.

I didn't notice this immediately as we don't get a ton of "cold" weather. My point is by the time I realized this I had already thrown out the original lift struts. There wasn't really anything wrong with the old ones, I replaced them as PM thinking it would make the liftgate motor's life a little easier having new struts to lift it.

Anyway, my point in saying all of this is that I went on RA and bought the only AC Delco lift struts they carry, which is the Professional line.

They came in yesterday and guess what...

They are the same exact "Strongarm" lift struts that I currently have on there. Same exact sticker, part number, everything.

I installed the new ones anyway just incase I got a bad one the first go around.

I put the Strongarms back into the AC Delco sleeves and I am sending them back for a refund. The Strongarms were about $15 each and the rebranded Delcos were about $25 each.

Heck of a racket they have going... lol

 

[Rocket Man]

Speaking of all this "Professional" line stuff.

I wasn't happy with the Strongarm brand of liftgate struts that I installed back in December on the Burb.

When it was cold out the power liftgate would get almost all the way to the top/fully open, and then would reverse and start coming back down as though it had encountered an obstacle.

I didn't notice this immediately as we don't get a ton of "cold" weather. My point is by the time I realized this I had already thrown out the original lift struts. There wasn't really anything wrong with the old ones, I replaced them as PM thinking it would make the liftgate motor's life a little easier having new struts to lift it.

Anyway, my point in saying all of this is that I went on RA and bought the only AC Delco lift struts they carry, which is the Professional line.

They came in yesterday and guess what...

They are the same exact "Strongarm" lift struts that I currently have on there. Same exact sticker, part number, everything.

I installed the new ones anyway just incase I got a bad one the first go around.

I put the Strongarms back into the AC Delco sleeves and I am sending them back for a refund. The Strongarms were about $15 each and the rebranded Delcos were about $25 each.

Heck of a racket they have going... lol

You know what that is? That’s fu**in ********, that’s what that is.

 

[Sparksalot]

Used theothertwin to haul my bleeding hound to the doggie ER overnight. She was chasing a squirrel and cut her leg to the artery.

She’s now sleeping in my office.

 

[Doubeleive]

Used theothertwin to haul my bleeding hound to the doggie ER overnight. She was chasing a squirrel and cut her leg to the artery.

She’s now sleeping in my office.

View attachment 273095 View attachment 273096 View attachment 273097

poor doggy, we had a rather large Siamese tom cat that like to get up in the engine compartment and sleep one morning my dad went out and started the jeep and fur flew out from under the hood everywhere, cat took off like a bat out of hell and ran off, he finally came back about 3 days later and one whole leg was shaved off down to the muscles, he survived but dam animals.

 

[wsteele]

Used theothertwin to haul my bleeding hound to the doggie ER overnight. She was chasing a squirrel and cut her leg to the artery.

She’s now sleeping in my office.

View attachment 273095 View attachment 273096 View attachment 273097

Glad she made it.