Annoying rattle

[PBorger05]

Hi all i'm new to this but i'm hopeing someone can help me figure out my problem,i have an 05 sliverado with a 6.0 and for about 6 months now i have this rattle when i put out from a stop sign or a stop light,it only does it when its under a light load, i've changed U joints twice already thinking that was the issue but it was'nt so now i'm completely lost.Hopefully someone can tell me what it is.

 

[zora]

If a U-joint doesnt have excessive play or signs of rust no reason to change it. Are you sure the "rattle" isnt ignition ping or knock? Have you checked the www.NHTSA.gov for any recalls or technical service bulletins? Can you localize the source of the noise, front, back, right, left?

 

[PBorger05]

Its some where in the front and maybe on the right i'm not sure

 

[zora]

You didnt answer whether you think it is engine ping/knock. If you are using 87 octane gas try switching to 89 octane for 2 tanks fulls and see if the noise goes away.

 

[PBorger05]

it's not a ping or a knock i put 89 in the truck since the day i got it

 

[Off Road King]

is it a 4x4?

 

[PBorger05]

yes the truck is 4wd

 

[Chuzz]

Any chance the rattle you're hearing is some kind of heat shield that's come loose?

 

[PBorger05]

i checked over the truck mutpile times and i can't find any thing

 

[Off Road King]

since it's a 4x4, your hubs might not have unlocked... I've had that happen here and there

 

[PBorger05]

ok thanks ill look into that