make sure it's not your trailer hitch or spare tire making the noise. lay under the truck and have some one rock it side to side.

 

I think the leaf spring issue has something to do with putting pads or spacers in between the leafs.

Here you go, check this out: How-To fix GMT 900 Leaf Spring Clunk

 

I had the same issue with mine. My 2011 crewcab was popping at first due to the running boards interfering with the body mounts 132.00 dollar fix at stealership. While attempting to fix that they sprayed lube on the leaf springs and created a horrible popping noise. Instead of taking back to stealership I found a post on here where a member had cut a bicycle tube into 2" wide strips and placed them between the spring packs and it fixed my leaf spring pop.

 

VT200proxl: That is the link I posted just above yours. It is a HOW TO to make the rubber bushings and how to install them.

 

Didn't see the link. Sorry for duplicate. Hope it fixes O.P. problem

 

Yah, I hear you. I hate all unusual sounds. I get squeaking from the rear when going over small bumps in the road. I am pretty sure it is the leaf springs as well. It seems to only happen when it is dry outside which lends me to believe that rain and moisture are "lubricating" the springs when they are wet.

 

1. I am an industrial mechanic for a pharmaceutical company. I don't do Band-Aids like putting a rubber piece between all the leafs. Not going to happen. I do actual repairs to fix the problem. So this is why I asked about the TSB that is listed (but gives zero information other than what the TSB is for). This truck already has the rubber boot things on the lower leaf.

2. It only does it when turning right into parking lot with a dip or lift. I have shook the truck every which way and had my wife and kids do it. never pops.

 

1. I am an industrial mechanic for a pharmaceutical company. I don't do Band-Aids like putting a rubber piece between all the leafs. Not going to happen. I do actual repairs to fix the problem. So this is why I asked about the TSB that is listed (but gives zero information other than what the TSB is for). This truck already has the rubber boot things on the lower leaf.

2. It only does it when turning right into parking lot with a dip or lift. I have shook the truck every which way and had my wife and kids do it. never pops.

Re: 1. Great, I'm a Engineering at a fortune 500 company in manufacturing and I design some wicked cool crap for the manufacturing floor. We use rubber, tie wraps and duct tape all the time for repairs... Well, because it works surprisingly well AND IT'S CHEAP (kidding, but not about the tie wraps :lol: ).

Re: 2. Sounds like something in the suspension or possibly axle related, I have no clue what the TSB is or I'd look it up. Do you have the TSB number?

3. Don't overlook the advice above. If it is the springs why not entertain the rubber idea? Shure as hell wouldn't hurt...

 

1. I am an industrial mechanic for a pharmaceutical company. I don't do Band-Aids like putting a rubber piece between all the leafs. Not going to happen. I do actual repairs to fix the problem. So this is why I asked about the TSB that is listed (but gives zero information other than what the TSB is for). This truck already has the rubber boot things on the lower leaf.

2. It only does it when turning right into parking lot with a dip or lift. I have shook the truck every which way and had my wife and kids do it. never pops.

Re: 1. Great, I'm a Engineering at a fortune 500 company in manufacturing and I design some wicked cool crap for the manufacturing floor. We use rubber, tie wraps and duct tape all the time for repairs... Well, because it works surprisingly well AND IT'S CHEAP (kidding, but not about the tie wraps :lol: ).

Re: 2. Sounds like something in the suspension or possibly axle related, I have no clue what the TSB is or I'd look it up. Do you have the TSB number?

3. Don't overlook the advice above. If it is the springs why not entertain the rubber idea? Shure as hell wouldn't hurt...

Because its a bandaid not a solution. Due to FDA regulations we cannot use Duct Tape. we do use tie wraps for temporary solution until we have a permanent fix. Rubber depends on the situation as we use rubber more for safety of employees (they tend to bump their hands/feet/head on things that well you wouldn't believe was possible).

BTW the company I work for is also a Fortune 500 company. Well ok we were.... now we are like 150 companies out of being a fortune 500.

Date Announced:
APRIL 01 2011

TSB #SB-09-03-09-001
NHTSA ID #10030766

Additional Info:
How to Fix

Summary: CHEVROLET/GMC: A CLUNKING NOISE COMING FROM THE REAR OF THE VEHICLE. UPON FURTHER INVESTIGATION, THE TECHNICIAN MAY DIAGNOSE THE NOISE COMING FROM THE REAR SUSPENSION LEAF SPRING AREA. *PE UPDATED 6/30/2011. *KB

That's all the info I can get on the TSB. I may not be looking hard enough...

 

GENERAL MOTORS Some 2007-10 Chevrolet Silverados and GMC Sierras may make a clunking noise in the rear. In T.S.B. 09-03-09-001 issued on May 6, General Motors says the problem is loose joints in the leaf spring assembly. Retorquing the bolts should quiet things down.

 

TECHNICAL
Bulletin No.: 09-03-09-001A
Date: April 13, 2011
Subject: Clunking Noise from Rear of Vehicle (Retorque Leaf Spring Bolts)
Models:
2007-2012 Chevrolet Silverado
2007-2012 GMC SierraSupercede:
This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 09-03-09-001 (Section 03 -- Suspension).Condition
Some customers may comment about a clunking noise coming from the rear of the vehicle. Upon further investigation, the technician may diagnose the noise coming from the rear suspension leaf spring area.
Correction
The noise may be resolved by retorquing the joints of the leaf spring assembly.

1.	Support the vehicle at curb height when retorquing the leaf spring bolts/nuts.Note Do not remove the fuel tank.
2.	Loosen the shackle joint to the frame, front eye joint to the frame, rear eye to shackle joint and the anchor plate U-bolts.
3.	Re-torque the shackle joint to the frame and to the rear eye. Tighten Tighten the shackle nut to 95 Nm (73 lb ft). 4. Re-torque the anchor plate U-bolts (1, 2, 3 and 4). Tighten Tighten the nut to 100 Nm (74 lb ft). 5. Re-torque the front rear spring mounting nut.Tighten. Tighten the front nut to 200 Nm (148 lb ft). 6. Repeat steps 2 through 5 for the right side leaf spring. 7. Re-test the vehicle for the same clunking noise. If the issue remains, follow the regular repair procedure TECHNICAL Bulletin No.: 03-03-09-002E Date: June 28, 2011 Subject: Rear Leaf Spring Slap or Clunk Noise (Replace Spring Inserts) Models: 1999-2012 Chevrolet Silverado 1500/2500 2000-2012 Chevrolet Suburban 2500 2002-2006 Chevrolet Avalanche 2500 2003-2012 Chevrolet Express 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y) 1999-2012 GMC Sierra 1500/2500 2000-2012 GMC Yukon XL 2500 2003-2012 GMC Savana 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y)Supercede: This bulletin is being revised to add the 2012 model year and update to the Warranty Information. Please discard Corporate Bulletin Number 03-03-09-002D (Section 03 - Suspension).Condition Some customers may comment on a rear leaf spring slap or clunk noise. This noise is most apparent when the vehicle is operated over irregular road surfaces. Cause The rear leaf spring tip inserts may have broken apart from wear and fallen out, or may be severely worn or damaged. Correction Important DO NOT disassemble the main pack on the leaf spring or remove the bushing from the spring. Light Duty Spring Verify that the rear leaf spring tip inserts (1) are present on the leading and trailing ends of the overload spring (second stage leaf), and inspect the condition of the inserts. If the inserts are either not present or severely worn or damaged, install new inserts. Important On some models, the vehicle may have to be raised to allow the springs to separate enough so the insert can be installed. Note Vehicles originally equipped with all plastic (1) or plastic and rubber (2) design tip inserts can be serviced by all rubber (3) updated design inserts. INFORMATION Bulletin No.: 99-04-20-002G Date: May 06, 2011 Subject: Information on Driveline Clunk Noise When Shifting Between PARK and DRIVE, PARK and REVERSE or DRIVE and REVERSE Models: 2012 and Prior GM Passenger Cars and Light Duty Trucks (including Saturn) 2010 and Prior HUMMER H2, H3 2009 and Prior Saab 9-7XSupercede: This bulletin is being revised to add current model years. Please discard Corporate Bulletin Number 99-04-20-002F (Section 04 - Driveline/Axle).Important The condition described in this bulletin should not be confused with the following previous bulletins: - Info - Discontinue Flushing and Replacing Transfer Case Fluid Due to Bump/Clunk Concern (Corporate Bulletin Number 99-04-21-004A) - Clunk, Bump or Squawk when Vehicle Comes to Complete Stop or Accelerating from Complete Stop (Replace Rear Drive Shaft Nickel-Plated Slip Yoke) (Corporate Bulletin Number 01-04-17-004B) - Clunk Noise at Stop or From Launch (Clean/Lubricate Rear Propshaft Slip Yoke Splines) (Corporate Bulletin Number 09-04-21-003D) - Bump Feel/Clunk Noise at Stop or From Launch (Clean/Lubricate Propeller Shaft Slip Yoke Splines) (Corporate Bulletin Number 09-04-17-002E) Some customers of vehicles equipped with automatic transmissions may comment that the vehicle exhibits a clunk noise when shifting between Park and Drive, Park and Reverse, or Drive and Reverse. Similarly, customers of vehicles equipped with automatic or manual transmissions may comment that the vehicle exhibits a clunk noise while driving when the accelerator is quickly depressed and then released. Note Compare this complaint vehicle to a like vehicle. If the results are the same, this is a normal condition. For additional diagnostic information, refer to the appropriate Service information.Whenever there are two or more gears interacting with one another, there must be a certain amount of clearance between those gears in order for the gears to operate properly. This clearance or freeplay (also known as lash) can translate into a clunk noise whenever the gear is loaded and unloaded quickly, or whenever the direction of rotation is reversed. The more gears you have in a system, the more freeplay the total system will have. The clunk noise that owners sometimes hear may be the result of a buildup of freeplay (lash) between the components in the driveline. For example, the potential for a driveline clunk would be greater in a 4-wheel drive or all-wheel drive vehicle than a 2-wheel drive vehicle. This is because in addition to the freeplay from the rear axle gears, the universal joints, and the transmission (common to both vehicles), the 4-wheel drive transfer case gears (and their associated clearances) add additional freeplay to the driveline. In service, dealers are discouraged from attempting to repair driveline clunk conditions for the following reasons: - Comments of driveline clunk are almost never the result of one individual component with excessive lash, but rather the result of the added affect of freeplay (or lash) present in all of the driveline components.Because all of the components in the driveline have a certain amount of lash by design, changing driveline components may not result in a satisfactory lash reduction. - While some owners may find the clunk noise objectionable, this will not adversely affect durability or performance. - For additional diagnostic information, refer to the appropriate Service Information.

 

Thanks guys... Was hoping a little easier (not that this is hard other than its flippin cold out) but tis better than replacement.

 

don't mean to bring up an old thread, but did re torquing solve this problem for you? my 2013 makes a clunk like you described as well as some squeaks over bumps and turns. it's driving me nuts!

 

sorry forgot to come back on and reply. yes it did.

 

awesome! thanks!

 

So my 2015 clunked the other day pulling into my driveway. So I just went and checked the ubolt torques. Sure enough all 8 were loose. I got about a full turn out of each one.