dmitrysgarage

Well, I went to the dealer this AM and they fixed it up right after lunch time. They did that TSB everyone else had (19-NA-129) which eliminated the sound. So no it's not "normal" for a solid axle to make that sound: They did a software flash to address the CEL I had. They enabled afterblow for me to help reduce mildew smell. My garage is air conditioned and i think the evap coil was just sitting there wet and never baking off.

Nice thanks guys! So much for the "it's normal for it to sound like a medieval carriage" nonsense. Going in Tuesday as I'm now throwing a CEL related to the brake module too (P25A2-00 Brake System Control Module 1 Requested MIL Illumination).

Did it fix the issue?

Thanks for posting this tinbad! This is exactly the TSB lapoolboy linked. Sounds like that is the issue... Wonder if this ends up being an every 10k miles part... Man it's a $2 part (84730971), im tempted to just order and DIY on my lift. It'll take me longer to drive to the dealer ?

Sounds like quite a few people are experiencing this noise past 10k miles :-/. Definitely seems like something is wearing or losing lube. Would be curious if everyone finds it's the issue posted by lapoolboy:

The thing is: 1. It didn't make the noise until just now. 2. Even people who see me drive by them still turn around, it's not like im sneaking up. The truck is definitely quiet for a truck overall. Not german sedan quiet, but pretty damn quiet minus this new issue.

Sorry but this post is impossible to follow, each sentence is disconnected and four of them have question marks. My point is that you literally said: Independent suspension has NOTHING to do with leaf springs which I quoted as being ancient / medieval cart like. There are vehicles that have IRS with leaf springs and there are vehicles with solid axles that have coil springs. Springs have nothing to do with axle type. As I said people walking down the sidewalk literally turn around to look at what that noise was because it startles them. That is objectionable by definition since normally people don't jolt to see what he scary noise was just because a vehicle goes up a driveway. Saying it's normal for solid axles to make noise is not true. I've owned plenty of solid axle vehicles. Furthermore this truck just started making this noise 10k miles in, not from day one. Obviously something wore or lost lubrication.

Thanks!

Thanks for the feedback Dean, I'll see if I can get the dealer to do it. It's still under warranty so I'd rather not bother doing it myself and paying for the parts.

Injecting grease between leaf springs won't void warranty. However, if I can't make it stop squeaking I'll definitely have them look. I can't visually see what it would be missing, I'd be curious if you know what the part # was on the receipt? Interesting! I wonder if that's what tinbad was referring to. I definitely have the inserts in there, I can see them. However, I did have some loose bolts. Wonder if the inserts are ****ed now. I may just swing past the dealer and have them look. Plus I want them to enable the afterblow on the HVAC so i stop smelling mildew. Solid axle rear suspension doesn't require leaf springs. Obviously you don't want IRS on a full size truck. However, this is the only solid axle rear suspension full size truck I've owned with leaf springs and it's also the newest. All the others had coil springs including ones 12 years older. Clearly you don't know how solid axle suspension works.

Thanks! Yea I can go back and re-torque, plus may help someone else down the line. I shot some grease into the leaf stacks themselves which *helped* but didn't completely eliminate. Too tired to drive around today to see if it just needs some exercise. Still sad about lack of grease fittings, I can puncture and inject the boot style ones, but these leaf spring ones, I can't see how to to inject anything into them. I can inject some red and tacky into the stacks too with a grease gun, which will probably quiet down better than the gel grease.

I can check the torque, any idea what it is? Should suspension be sprung when testing or should I throw her on a lift? Also any specific lube recommendations? Never worked with leaf springs. I have some red and tacky on hand. EDIT: I checked the U-bolts and at least two fasteners on each side were loose compared to the others. Torqued the loose ones up. I also tried some gel grease that's rubber safe to see if it will penetrate into the bushes, but it really doesn't. Has anyone managed to successfully grease these bushes? They seem sealed and the design around them doesn't really let you inject in and there's no grease fitting. Seems almost like... once they do this you either live with it or replace them. Doesn't seem like this truck has much in the way of any grease fittings.

Haven't had a truck with leaf springs before, all my other ones had coil springs. Is it normal for them to groan and creak when entering a driveway at an angle? It's pretty loud, I literally see people turn around to look at what that sound is. Kind of annoying for a truck with 10k miles on it sound like a medieval carriage. Is there some corrective action that can be done to make it stop, i.e. lubrication or any modifications? I can reproduce the sound just jumping up and down with my running boards extended. Either side of the truck.

Yea I'm having this and a ton of other electronics issues. Not sure who you can file a complaint with, but if you figure it out let me know. In my state I don't think electronics qualify under lemon law (unlike powertrain). Seems like I'm going to wind up selling it at a loss once it winds up pissing me off enough.