kieefer

I was thinking tailgate but I see that was mentioned. U-Joint maybe?

Rattles are tough ones, might get someone to ride in the bed for a test run?

Unrelated but really want to share.
My son's 2014 BMW had an annoying rattle at low speed and it bugged him to death especially in his daily parking garage drive. Always was silent once past 30-40 mph.
We jacked it up and searched for an hour until my son rotated the front wheel.
The tire had a 3/4 size electrical box knockout plug inside the tire. Tink, tink at a slow roll then once up to speed it would stick to the tire.
Never know.

2quik

I checked the tail gate, i havent checked the u-joint. I will check it out, thanks for the suggestion. I'll report back my findings.

2quik

I checked the u-joins, there was no wiggle. So thats not the problem. Maybe leaf spring...?

Rubyjacq

i put the Icons on my truck last year. The original shock mounting bolts are smaller than the hole in the shocks. Mine made noise at first. I drilled out the shock mount holes to 1/2 inch and used new bolts. No noise ever since

Pax4d

2015 KR SC FX4 - I have been following this thread as I have had a rear bed rattle myself. I also have the moon roof rattle, and a rear seat rattle... Basically I have lots of rattles. But good news today. After a visit with my dealer they replaced the right rear leaf spring and I can say after half a day of driving the rear rattle is substantially reduced. I thought the dealer should have replaced both sides, but they determined it was only the right side. They were mistaken, turns out the right side was just nosier. But they will replace the left as well and I am hopefully that the rear bed rattle mystery will have been solved. I also had the Moon Roof TSB done for a 2nd time (grease) and it quieted down just like last time. not expecting it to last long term, but its nice for now.
For anyone having a rattle/cluck/noise from the rear of the truck that you can't quite place. Its most likely the rear leaf springs. Wanted to share my experience with the forum, as I have been using it as a resource since I bought the truck.

Black16sport

I finally got around to checking my torque spec on the bolts for my icons last weekend. It was the problem. I got a few whole turns on all the bolts. No more rattle when finished. I guess the problem could be multiple issues. Best of luck to everyone on figuring it out and thanks for all the suggestions and info.

Iamraiderpower

Check to make sure spare tire is tight?

16LariatFx4

Hearing same thing on my truck that still has factory shocks. Will be checking the shock bolts on mine too.

2quik

how did the dealer determin the leaf spring needed replaced, was one spring broke?

16LariatFx4

Didn't seem as though the shock bolts were loose on mine. Only happens in reverse and going over something such as pulling into home driveway and into the garage. Spare doesn't move around. Drive shaft seems good.


Taking it to dealer Friday morning.