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

[juan84]

Nothing still sitting in garage waiting for spring lol

Sent from my SM-G920T using Tapatalk

 

[NGAneer]

@iamdub @kbuskill

Thanks guys. I'm going to take a look at both of those things and give the keys to my wife for a ride or two. It definitely has more of a thin metal sound so the heatshield idea might be it.

The squeak lives on.

So here's what I've done...
-tightened rear shock bolts
-tightened front cross member bolts
-torqued the sway bar bushing brackets and end links
-pried the dust shields away from the rotors
-torqued the 36mm CV Shaft nut
-sprayed some white lithium grease on the CV splines (as a test)
-torqued the top and bottom bolts on the struts
-greased the ball joints (which are brand new)
-greased the TREs

Here's what I've checked
-banged on the exhaust with the heel of my hand from the muffler to the cats
-shook the front drive shaft
-tapped the heat shield on the side of the trans
-tapped the heat shield at the spare tire

I was able to replicate it by shaking the truck from the right front. I had to shake it pretty violently to replicate hitting a sharp bump at speed (like a crack in pavement or road reflector). The squeak sounds for sure like it's inboard of the strut and down low. Has me thinking LCA bushings, something in the CV or inner TRE.

I've also thought maybe the bolts on the steering rack are loose, only because I had a leaking PS pump and all that stuff got covered in PS fluid. Maybe allowing bolts to loosen.

We've all done stuff like this. It's going to be something trivial and stupid. When I find it I'm going to feel like a dang idiot for not finding it sooner.

 

[HiHoeSilver]

The squeak lives on.

So here's what I've done...
-tightened rear shock bolts
-tightened front cross member bolts
-torqued the sway bar bushing brackets and end links
-pried the dust shields away from the rotors
-torqued the 36mm CV Shaft nut
-sprayed some white lithium grease on the CV splines (as a test)
-torqued the top and bottom bolts on the struts
-greased the ball joints (which are brand new)
-greased the TREs

Here's what I've checked
-banged on the exhaust with the heel of my hand from the muffler to the cats
-shook the front drive shaft
-tapped the heat shield on the side of the trans
-tapped the heat shield at the spare tire

I was able to replicate it by shaking the truck from the right front. I had to shake it pretty violently to replicate hitting a sharp bump at speed (like a crack in pavement or road reflector). The squeak sounds for sure like it's inboard of the strut and down low. Has me thinking LCA bushings, something in the CV or inner TRE.

I've also thought maybe the bolts on the steering rack are loose, only because I had a leaking PS pump and all that stuff got covered in PS fluid. Maybe allowing bolts to loosen.

We've all done stuff like this. It's going to be something trivial and stupid. When I find it I'm going to feel like a dang idiot for not finding it sooner.

Maybe start spraying some silicone on those spots one at a time a few days apart and see if it goes away.

 

[NGAneer]

Maybe start spraying some silicone on those spots one at a time a few days apart and see if it goes away.

Holy mind meld batman. Just bought a can.

 

[Chuck_Finley]

Put in a replacement rear armrest cap that was missing when I bought my hoe, now there are officially no missing parts!

 

[Doubeleive]

The squeak lives on.

So here's what I've done...
-tightened rear shock bolts
-tightened front cross member bolts
-torqued the sway bar bushing brackets and end links
-pried the dust shields away from the rotors
-torqued the 36mm CV Shaft nut
-sprayed some white lithium grease on the CV splines (as a test)
-torqued the top and bottom bolts on the struts
-greased the ball joints (which are brand new)
-greased the TREs

Here's what I've checked
-banged on the exhaust with the heel of my hand from the muffler to the cats
-shook the front drive shaft
-tapped the heat shield on the side of the trans
-tapped the heat shield at the spare tire

I was able to replicate it by shaking the truck from the right front. I had to shake it pretty violently to replicate hitting a sharp bump at speed (like a crack in pavement or road reflector). The squeak sounds for sure like it's inboard of the strut and down low. Has me thinking LCA bushings, something in the CV or inner TRE.

I've also thought maybe the bolts on the steering rack are loose, only because I had a leaking PS pump and all that stuff got covered in PS fluid. Maybe allowing bolts to loosen.

We've all done stuff like this. It's going to be something trivial and stupid. When I find it I'm going to feel like a dang idiot for not finding it sooner.

try taking off the sway bar rubber "D" bushings and put lithium grease inside them and put back on, they will squeak if not lubed up, spraying from the outside wont get into where it needs to be, same for the rear sway bar.

 

[NGAneer]

try taking off the sway bar rubber "D" bushings and put lithium grease inside them and put back on, they will squeak if not lubed up, spraying from the outside wont get into where it needs to be, same for the rear sway bar.

Yep, you're right. I've already done this though. Put new ones on there about a month ago with lithium grease inside the bushing and on the end link bushings.

 

[NGAneer]

Well, got a can of Liquid Wrench silicone spray and SOAKED the front LCA bushings and rocked the truck before starting on my way home (about 20 miles). Still squeaking.

When I got home, I soaked the rubber exhaust hangers. We'll see in a little bit if that works.

 

[iamdub]

Loose hood hinge or fender bolt(s)? Passenger door do any squeaking when opened?

 

[Doubeleive]

Well, got a can of Liquid Wrench silicone spray and SOAKED the front LCA bushings and rocked the truck before starting on my way home (about 20 miles). Still squeaking.

When I got home, I soaked the rubber exhaust hangers. We'll see in a little bit if that works.

well you could always buy one of those 8 point mic kits and place them all over under the truck and narrow it down that way, I have almost had to do that before.