mred

iTrader: (5)

i have been doing some reading/searching and it seems that my problem as usual is very far and few lol....
i live in Dallas,Tx and it very seldom gets cold here but when it does the truck surges a few times then acts like its running out of gas, i can idle it up a small amount and it shudders then idles up just fine, truck it will die if i let it or some times the truck hold like 300-400 rpms and shudder like it has a cam. eventually the truck clears out and idles fine.(once warm)
the truck is an 2002 2500hd 6.0 with only 64k miles
truck is all stock NO TUNE...
i am assuming its the intake gasket...
intake gasket or not?
thanks
Ed

BlackGMC

iTrader: (31)

How many miles on your o2 sensors??

mred

iTrader: (5)

64k miles
but funny you ask that i have a cat that is rattling and i also thought that this was effecting the o2 sensor as well.
could it be?

MikeGyver

iTrader: (5)

If you have a cable throttle, the IAC might be dirty.

mred

iTrader: (5)

during cold start ups only??
i cleaned all that stuff a few weeks ago when this all started,that did nothing, well it made the throttle a little smoother

2007chevy5.3l

iTrader: (21)

Wouldnt it be in open loop during cold startup when hes having this problem?

mred

iTrader: (5)

o yeah, no codes/dtc as well

2007chevy5.3l

iTrader: (21)

Have you tried running seafoam or any kind of injector cleaner in the tank to clean injectors and fuel system?

mred

iTrader: (5)

one can of sea foam at the same time i cleaned all the other stuff

mred

iTrader: (5)

No more input?
Contacting the GENERAL tomorrow about the catalytic converter issue.