SiniSter5.3

my 06 5.3 has a vibration at idle ,had it to the dealer twice and they
say nothing is wrong. 10,000 miles on truck and it is me off.
any one else having this issue

trever1t

iTrader: (14)

I used to when my truck was stock. Really bugged me too. What rpm do you idle at? Mine idled at 600 and it was just too low. After I got it tuned i was amazed how smooth it was.

SiniSter5.3

500-600 rpm idle

SBTork

iTrader: (5)

seems very, very low

04Denali

Mine idles at 560rpm

BLACK04VHO

iTrader: (2)

yeahI had the same problem even after had the radix installed. A new tune and the idle is much better and alot of the noise is gone. Now all I can hear is my belts on the radix and my loud *** exhaust.

86MC_SS

iTrader: (3)

Almost every truck with a 5.3 does this that I have seen. My truck and my buddies 05 w/ a 5.3 does it too.

SiniSter5.3

I bought mine a month after my friend bought his only difference is his is ec mine cc
his don't have the vibration mine does. I think the balancer is f'ed up you can watch
the lowwer belt tensioner and it bounces all over and his hardly moves at all.
but the dealer insist nothing is wrong.

SiniSter5.3

took it back to the dealer this time the dealer says it is something in the exhaust
that is causing the viberation they were going to put a flex coupler in the exhaust
to elminate the viberation. what is yalls opinion on this I'm gonna have to call