Thanks gemarsh. This is very interesting. Edited since I'll make an appt with the dealer
Last edited:
Clunking from rear of truck when turning or rocking to side , and not head on ?
- Thread starter Purple MF
- Start date
The precise issue I am/was having. I will have to make an appt with the dealer and forget taking it to my mechanic.
myrez
Active member
Interesting. Lets us know how it turns out.
Should I request dealer to order new Shackles and u-bolts from GM or Shackles from GM and bolts from Ford?
Post installation, do you feel allowing the axle to hang for any reason will be detrimental?
I don't believe there is a problem with the shackles.
I was just spit ballen' about the ford u-bolts. I don't have first hand knowledge if they are better or not. I don't have this problem with the dually and it's been in the air.
The rear-end should be able to hang freely without problems.
I am wondering if the springs are relieved of pressure hanging, allowing debris to mitigate between the leafs. But the debris should grind to a powder, once loaded and miles put on them. I put over 2500 miles on them after they started squeaking and just got worse, before they were replaced.
I'm not looking forward to having the rear-end hanging again. Never been an issue in years of vehicle ownership.
I was just spit ballen' about the ford u-bolts. I don't have first hand knowledge if they are better or not. I don't have this problem with the dually and it's been in the air.
The rear-end should be able to hang freely without problems.
I am wondering if the springs are relieved of pressure hanging, allowing debris to mitigate between the leafs. But the debris should grind to a powder, once loaded and miles put on them. I put over 2500 miles on them after they started squeaking and just got worse, before they were replaced.
I'm not looking forward to having the rear-end hanging again. Never been an issue in years of vehicle ownership.
Then I need both rear spring packs not shackles/bolts although it appears you had new bolts installed with the packs.
How did you convince the dealer about replacing spring packs other than just demonstrate squeaking. I want to avoid multiple trips to the dealer if possible.
How did you convince the dealer about replacing spring packs other than just demonstrate squeaking. I want to avoid multiple trips to the dealer if possible.
Dealer followed the tsb, when that did not cure it, they hauled my ass to the bay and showed me the progress(none) and said they were going to replace springs and it would take a day or so. The tsb says to refer to SI (service information) , if re-torque'ing didn't resolve issue.
Didn't know they were going to replace the u-bolts until it was done and apologized for taking so long while I waited. Service manager said their inventory was off and sourced the u-bolts from local ford dealer. I can't tell a difference in the looks.
Doesn't have a FORD sticker, or dealer ripped it off!
Didn't know they were going to replace the u-bolts until it was done and apologized for taking so long while I waited. Service manager said their inventory was off and sourced the u-bolts from local ford dealer. I can't tell a difference in the looks.
Doesn't have a FORD sticker, or dealer ripped it off!
Just left a message for my SA; request he orders spring packs and ubolts; I recollect they had tightened 'everything' below when I complained about the noise last time I was there to install a putco light. Now I'll wait for his response.
At this time the SA agreed to only follow the TSB and appt is set for this Thursday. Hopfully he will realize it does not work and order spring packs else it will be another visit.
tahoetruck
Member
2023 AT4; had the spring clunking, installed the "Spring Things" (took less than an hour) and noise is GONE!
"Spring Things" was worth a shot however they did nothing for my truck the AT4X; creaking and groaning did not stop. GMC Tech subsequently confirmed my AT4X needs new rear spring pack assemblies which have been ordered by the dealer and expected at the dealer in another week or so.
Good to read that dealer is taking care of you(r) truck.
Luckily for me this Dealer has so far been second to none and has done whatever it takes to keep me and my vehicle happy.
New rear spring packs installed today after they finished installing the winch. Peaceful now, no creaks, groans or anything. I hope it lasts 
Bunch of pics below
Bunch of pics below
Island Dan
Active member
As a manufacturer, how in the F do you produce bad leaf springs?! The same exact design has been used since covered wagons for Pete's sake. My last pickup i retightened my u-bolts after some clunking, they were off almost 20ft lbs at 20k milage.
