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

[iamdub]

Took a vid of the new starter sound. I'm convinced it's spinning the engine faster. It starts a little quicker. Supposedly, it's only a 1kw motor:

 

[RooTBeeRthe1st]

Took a vid of the new starter sound. I'm convinced it's spinning the engine faster. It starts a little quicker. Supposedly, it's only a 1kw motor:

After I cleaned all my battery connections and got the new starter battery put in, mine sounds about like that, but I'm still going to put the new 1.7 KW in sooner or later.

 

[RooTBeeRthe1st]

Finally finished the evaporator core cleaning and cabin filter retrofit-


Bought a piece of 16" thin PVC pipe (some kind of pre-made sink connector piece) then softened it with the heat gun to flatten it. Ugly but very functional. Taped it to the shop vac with painter's tape cuz that was the first tape I could get my hands on and I didn't have many fcuks left to give with this project:

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Still looks gross but it's a lot better than what it was and I was over leaning into the floorboard at this point:

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Holding filter in place for the pic:




Closure installed.




I left the blower on high with all vents closed except for the one on the far right of the dash so I could reach it to feel. I didn't notice any excessive reduction in volume out of the vent. Doesn't matter, it's done. Spent most of the time getting that screw in front of the subwoofer installed.

I put the filter in mine many moons ago, but I still get this very dirty smell switching between AC and vent.
Need to clean the evaporator one of these days.

 

[iamdub]

After I cleaned all my battery connections and got the new starter battery put in, mine sounds about like that, but I'm still going to put the new 1.7 KW in sooner or later.

My Big 5 upgrade didn't seem to make any difference in the starting. This new one looks the same as the old, just new. Either it's stronger internally or the old one worked and sounded like this way back when it was new. It's doing fine for only drawing ~90 amps.

 

[iamdub]

I put the filter in mine many moons ago, but I still get this very dirty smell switching between AC and vent.
Need to clean the evaporator one of these days.

Might need to remove the blower and the cowl trim and clean all the crud from in there. Mine has some pine needles on the screen. Nothing like broad leaves sitting there and blocking flow and holding moisture. I just pulled out the pine needles that were poking through the screen. I wasn't in the mood to remove the trim piece.

 

[mikeyss]

Took a vid of the new starter sound. I'm convinced it's spinning the engine faster. It starts a little quicker. Supposedly, it's only a 1kw motor:

It almost sounds like a starter from a 6.2, like mine

 

[gooffeyguy]

Finally finished the evaporator core cleaning and cabin filter retrofit-


Bought a piece of 16" thin wall PVC pipe (some kind of pre-made sink connector piece) then softened it with the heat gun to flatten it. Ugly but very functional. Taped it to the shop vac with painter's tape cuz that was the first tape I could get my hands on and I didn't have many fcuks left to give with this project:

View attachment 412105



View attachment 412106


Still looks gross but it's a lot better than what it was and I was over leaning into the floorboard at this point:

View attachment 412102


Holding filter in place for the pic:

View attachment 412103


Closure installed.

View attachment 412104


I left the blower on high with all vents closed except for the one on the far right of the dash so I could reach it to feel. I didn't notice any excessive reduction in volume out of the vent. Doesn't matter, it's done. Spent most of the time getting that screw in front of the subwoofer installed.

I don't remove that screw, just loosen it. Still allows the cover to be rotated/swung out of the way

 

[gdddup]

What'd you use to fill in the gaping holes- cut pieces from the tubes?

The cut off scraps are used as plugs or just pieced and melted together

 

[iamdub]

It almost sounds like a starter from a 6.2, like mine

It does! I don't see why the 6.2 would have a different starter, so it probably is the same. I think I've just gone for so long with a worn-out starter and most every other GMT800 and '900 I hear has an aged and ailing one that I've always thought that's just how they were.

 

[iamdub]

I don't remove that screw, just loosen it. Still allows the cover to be rotated/swung out of the way

I didn't wanna work in the floorboard with that cover there. I had my chimp self, my tools and a large LED work light already competing for space. Lesson learned! I'd rather fight the cover than fight that screw.

 

[PG01]

Took a vid of the new starter sound. I'm convinced it's spinning the engine faster. It starts a little quicker. Supposedly, it's only a 1kw motor:

Thought it was in my head…. And it probably is but the reman I got from RA when mine went in the beginning of summer, I swear, I noticed it spins/starts faster and has a slightly diff tone….then again, it was 10 yrs old and subjected to salty goodness of the NE roads for said 10 yrs….

 

[pwtr02ss]

I don't remove that screw, just loosen it. Still allows the cover to be rotated/swung out of the way

I left the screw out completely, the 3rd time I took it out...beat that

 

[gooffeyguy]

I left the screw out completely, the 3rd time I took it out...beat that

I thought about doing that also, but thought it might cause a rattle or something.

I do know that my 1/4" drive Craftsman ratchet along with a 1/4" deep well socket fits perfectly/is correct length to go up in the hole and between the trans hump to get to that screw. I usually don't have a problem getting to the screw with a tool, but I have a problem getting the screw lined up with the hole up in the recess to be able to screw it back in

 

[PG01]

I left the screw out completely, the 3rd time I took it out...beat that

Same

 

[pwtr02ss]

I thought about doing that also, but thought it might cause a rattle or something.

I do know that my 1/4" drive Craftsman ratchet along with a 1/4" deep well socket fits perfectly/is correct length to go up in the hole and between the trans hump to get to that screw. I usually don't have a problem getting to the screw with a tool, but I have a problem getting the screw lined up with the hole up in the recess to be able to screw it back in

No rattles here

 

[PG01]

No rattles here

Same

 

[PG01]

 

[swathdiver]

You guys were talking starter motors and I googled and did indeed see that the 5.3s use a 1.4 Kw starter and the 6.2s use a 1.7 Kw starter. Learn something new everyday with these things. Unfortunately, I cannot remember where I saw y'all posting about it.

 

[RooTBeeRthe1st]

You guys were talking starter motors and I googled and did indeed see that the 5.3s use a 1.4 Kw starter and the 6.2s use a 1.7 Kw starter. Learn something new everyday with these things. Unfortunately, I cannot remember where I saw y'all posting about it.

Yeah, I noticed that on RockAuto when somebody mentioned the 1.7 starters, I've decided to check the 6.2's and sure enough, there it was.
That's what I picked up actually.

Got a few parts needing install.

I tell you what, accidentally bought some rotella t6 15w40 instead of 5w40... My goodness is the oil pressure reading much happier numbers. Idling at 25, and driving normally immediately shoots up to 35, and then 45. Maxing at 53 and actually dropping down to 51 at 6,000.
Is it necessary for anything? Absolutely not, do those numbers make my brain happier, yes, I might just run 15w40 for the rest of this engine's life.

She might be a little lifted on mud terrains, but still handles quite well when you lean on her. Hardly had to touch the brakes, never crossed painted lines, never squealed the tires (aside from the chirp going into second gear).
And that was just a comfortable pace. If I really wanted to ring her out on the streets and get hard into the brakes before the corners, I could have knocked much more time off of that trip.

 

[iamdub]

I tell you what, accidentally bought some rotella t6 15w40 instead of 5w40... My goodness is the oil pressure reading much happier numbers. Idling at 25, and driving normally immediately shoots up to 35, and then 45. Maxing at 53 and actually dropping down to 51 at 6,000.
Is it necessary for anything? Absolutely not, do those numbers make my brain happier, yes, I might just run 15w40 for the rest of this engine's life.

I mix three quarts each of 5W-40 and 15W-40. In my mind, 5W is too light and 15W is too heavy so 10W-40 just makes me feel good.