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

[RooTBeeRthe1st]

I'd like to know your findings! I wish I could find ethanol in the 70s here. At what brand of fuel are you getting your 70-80%?

We used to only have Pearson and propel here, but for a while now, 76 has there own(they used to carry one of the other brands) and that's the most abundant here so that's mostly what I use.

 

[Doug118]

That's the fixed caliper stuff, yeah? What diameter are the rotors?

Yup fixed 4 piston caliper. Only thing you need to do is add a washer between the spindle and caliper for it to be centered

Rotors are 13.5”

 

[992dr]

well the seal can be replaced from the front but most of the time the problem is the pinion is bad, replacing the seal alone has pretty low odds of fixing the problem.
you can drop the drive line and grab it and give a good wiggle if there is any play at all then it's time to replace the pinion and that's a bit of work and it has to be set properly or it will just fail again.
you have to remove the brakes, remove the axles, pull the carrier out and then you have access to the pinion

I'll drop it in the morning and give it a little wiggle.
I don't have the tools or knowledge to do that kinda work, never worked on any rear ends before. I'll have to drop it off at my mechanic for that.
From what I've seen it could be a warn seal, at least I'm hoping that's all it is.
One thing I've noticed since we've moved to the coast is the heat/humidity and just how strong the sun is, it's amazing how much of a difference there is compared to inland just three hours away.
I'll be back in the AM with an update.

 

[RooTBeeRthe1st]

Anyone in here know of a decent semi-float 14-bolt 9.5" diff cover?
If mine is no longer straight and ceiling properly. I figure I should replace it with something fancy.

 

[randeez]

Anyone in here know of a decent semi-float 14-bolt 9.5" diff cover?
If mine is no longer straight and ceiling properly. I figure I should replace it with something fancy.

pml is the only one that fits with the panhard bar iirc
It is what I have on mine, i like it except that it's raw aluminum, and almost like stains if you get gear oil on it. Powder coat would've been nice

 

[RooTBeeRthe1st]

pml is the only one that fits with the panhard bar iirc
It is what I have on mine, i like it except that it's raw aluminum, and almost like stains if you get gear oil on it. Powder coat would've been nice

Damn that's a price! Lol
Thanks for the quick reply

 

[randeez]

Damn that's a price! Lol
Thanks for the quick reply

you said fancy

 

[gooffeyguy]

Does Yukon Gear make one for that model?

EDIT: They only make a steel or chromed steel cover for the 9.5", not a fancy nodular iron one with drain plug.

 

[89Suburban]

If y'all decide you get sick of the door/seat belt/CEL/key in IGN/limp mode chime noise, I can attest that if the LF door speaker took a sht or is disconnected you will never hear it again FTIW.

 

[swathdiver]

Question, how many of you guys have replaced your pinion seal? Any tips would be much appreciated.

If the pinion appears good as Wes mentioned, then changing the seal is not too big a deal. First thing after pulling the driveshaft is to scribe a line on the pinion and pinion nut so you know where to torque it back to. You're supposed to use a new nut.

Before you remove the nut with an impact gun, use a beam torque wrench or one like below to measure the rotational force in inch/pounds.

When you torque down the nut after installing the new seal and line up the scribe marks, you want to use the torque wrench again and make sure the number is 3-5 inch/pounds more or else you'll have to take it apart.

Anyone in here know of a decent semi-float 14-bolt 9.5" diff cover?
If mine is no longer straight and ceiling properly. I figure I should replace it with something fancy.

Bought a new AAM one and still need to send it out for powder coating. Orange of course as it's a pumpkin!