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

[Doubeleive]

I should be changing it myself but I am lazy and usually manage to make a mess or strip the bolt, or you name it.
I will do tons of other stuff when I have time to go run for parts because shit just never goes smooth for me.

something as simple as a oil change is all it takes haha

 

[gooffeyguy]

because i may be placing the meter in a sweet spot with the open slats, a better test would involve a more controlled environment. If i build a funnel to about a 4" hole then I can get a reading for either one more accurately. I have plenty of cardboard and tape.
I personally think the slots will catch more air but that's just my brain seeing big open slots versus small holes

So you're saying a funnel on the meter side, I thought you meant on the fan side, lol

 

[gooffeyguy]

No math needed, except for a ruler (not your wife kind of ruler...). See @Geotrash's post. Apples-to-apples comparison. EZPZ

Damn engineers and their math and measurements and stuff.

I am in the Show Me state and like experiments/tests

 

[Doubeleive]

might be a minute before I get one, bleeding money like a stuck pig at the moment, maybe if one shows up in the junkyard.

 

[Chevymec]

We are headed to Ohio soon so I have had some repairs to do to the Tahoe. Changed the oil, transfer case fluid and output seal, both rear jounce bumpers, replaced the ac cycling switch, and the ac high pressure fitting. As I was leaving work my passenger headlight quit.... again. Pigtail burnt up. Luckily I just ordered 2 new GM headlights and I put those in when I got home. Also replaced the rear bowtie emblem.

 

[89Suburban]

Installed my drop links in the front

 

[Geotrash]

Replaced the suspension compressor on the 2012, performed the ALC relearn, and discovered that my rear brakes were down to metal on the drivers side. Never had that happen before because I check them often. But it was the bottom end of the inboard pad, or I would’ve seen it. I heard the squeal of the pad sensor on our trip home, but that’s at the top end of the pad. Anyway, I installed new pads and rotors and thankfully no leaks from the axle seals were noted.

 

[Grady_Wilson]

Replaced the suspension compressor on the 2012, performed the ALC relearn, and discovered that my rear brakes were down to metal on the drivers side. Never had that happen before because I check them often. But it was the bottom end of the inboard pad, or I would’ve seen it. I heard the squeal of the pad sensor on our trip home, but that’s at the top end of the pad. Anyway, I installed new pads and rotors and thankfully no leaks from the axle seals were noted.

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Since your pads wore unevenly, did you make sure the slide pins were cleaned up and lubed?
And did you check the piston for corrosion tht could be causing uneven pressure application?

 

[Geotrash]

Since your pads wore unevenly, did you make sure the slide pins were cleaned up and lubed?
And did you check the piston for corrosion tht could be causing uneven pressure application?

Yes on lubing the slide pins - standard procedure when I do brakes. The calipers are of course suspect, but it’s been a dry country car all of its life before coming to VA, and once here has never been driven in snow or on salted roads. All of the hardware was clean and with a wash could pass as new. The piston is phenolic so won’t rust, and looked to be in good shape. All the same, I’ll keep an eye on them for a while.

 

[Doubeleive]

Well the cam is good, so left bank is getting done and hopefully that's it for a good while. Lifter #1 was bad

 

[89Suburban]

Well the cam is good, so left bank is getting done and hopefully that's it for a good while. Lifter #1 was bad

Holy mackerel.

 

[Doubeleive]

Holy mackerel.

about 3000 mackerals, better than 6, would be cheaper if I had them just do the 1 lifter and put the head back on but better to just do the whole bank and get the head resurfaced

 

[justchecking]

about 3000 mackerals, better than 6, would be cheaper if I had them just do the 1 lifter and put the head back on but better to just do the whole bank and get the head resurfaced

I really don't think you needed to change that bad lifter. JUST kidding, read on. So, I was picking up my daughter a while back at the airport and as I pulled into the cell phone lot I see another 2011 WHITE Suburban LTZ just exactly like the twin of mine backed into a spot in the back row. So me being me I backed in right next to it on their drivers side. I see the driver dinking on her phone for a while, then I see the recognition as she sees my bumper and looks along the car and looks over at me. So I roll down my window and we had a very nice conversation about our Suburbans. They bought it new and have about 205,000 miles on it. No issues ever and change the oil whenever the oil monitor says to. Best car they ever had and going to keep it forever. Finally she gets a text from her husband that he is ready to be picked up. She fires up the Suburban - TICKYTICKYTACKTACKTACKYTICKYTACKTACKTACKTACK!!!! Then she gave me a friendly wave and off she went!
So changing lifters may be overrated. No pictures because I already was afraid she might think I was a Suburban stalker. I do wish I had a video though.

 

[Chevymec]

where did you source the motor?

It came from Amazon. $45ish .

 

[Doubeleive]

It came from Amazon. $45ish .

I fixed my passenger side one a while ago now the drivers side is mostly not working I think I'd rather just change the whole motor. Got a link?

 

[Chevymec]

I fixed my passenger side one a while ago now the drivers side is mostly not working I think I'd rather just change the whole motor. Got a link?

20756891,GM0817558 Power Folding Door Mirror Motor Left/Right Compatible with 2007-2013 GMC Yukon Sierra, Chevrolet Tahoe Suburban Silverado, Cadillac Escalade Replace GM0817558,20756891 https://a.co/d/00DhuMff

$49. I was a few bucks off.

 

[j91z28d1]

I really don't think you needed to change that bad lifter. JUST kidding, read on. So, I was picking up my daughter a while back at the airport and as I pulled into the cell phone lot I see another 2011 WHITE Suburban LTZ just exactly like the twin of mine backed into a spot in the back row. So me being me I backed in right next to it on their drivers side. I see the driver dinking on her phone for a while, then I see the recognition as she sees my bumper and looks along the car and looks over at me. So I roll down my window and we had a very nice conversation about our Suburbans. They bought it new and have about 205,000 miles on it. No issues ever and change the oil whenever the oil monitor says to. Best car they ever had and going to keep it forever. Finally she gets a text from her husband that he is ready to be picked up. She fires up the Suburban - TICKYTICKYTACKTACKTACKYTICKYTACKTACKTACKTACK!!!! Then she gave me a friendly wave and off she went!
So changing lifters may be overrated. No pictures because I already was afraid she might think I was a Suburban stalker. I do wish I had a video though.

she had no idea the $6k plus bill she was about to get hit with.

such a shame gm did that to these trucks. 200k is good thou.

 

[j91z28d1]

about 3000 mackerals, better than 6, would be cheaper if I had them just do the 1 lifter and put the head back on but better to just do the whole bank and get the head resurfaced

I can never remember the details. you said it was a new motor with 100k and afm turned off in tune?

did they say what happened to the lifter?

 

[Doubeleive]

I can never remember the details. you said it was a new motor with 100k and afm turned off in tune?

did they say what happened to the lifter?

it was new a motor about 90k ago, but ya I have had afm turned off. I am going to go by there on monday and see what details I can find, I'll see if they let me back there to pick the tech's brain a little and look at the lifters. I have driven it pretty hard it's hasn't been babied by any means, but I have changed the oil every 3k, plugs got changed at about 50k
I don't know of anyone that drives like me unless they are on the track and I have actually calmed down a lot compared to 10-15 years ago
I think my average highway speed has probably increased but less pedal to the floor, easing into it a little bit helps not break stuff as much

 

[j91z28d1]

it was new a motor about 90k ago, but ya I have had afm turned off. I am going to go by there on monday and see what details I can find, I'll see if they let me back there to pick the tech's brain a little and look at the lifters. I have driven it pretty hard it's hasn't been babied by any means, but I have changed the oil every 3k, plugs got changed at about 50k
I don't know of anyone that drives like me unless they are on the track and I have actually calmed down a lot compared to 10-15 years ago
I think my average highway speed has probably increased but less pedal to the floor, easing into it a little bit helps not break stuff as much

super interested in what you find if they let you see the lifter. you caught it so early. I wonder what they failure point is.

I don't remember, but I'm guessing it was a afm cyl? if it didn't hurt the cam, I'm guessing not the roller or the trays. it wasn't ticking loudly, so I feel like the afm part didn't release and get stuck. that kinda only leaves the normal plunger part of the lifter.