[1000hp]

It sounds like my converter is ticking. Sounds almost like a stuck lifter but not that loud. It's makes the noise in forward, neutral and reverse idling. Reverse is quieter but the sound does not go away. If I bring up the rpms it goes away after about 900-1000 rpm. Really wierd. Any thoughts?

 

[Leadfoot]

It sounds like my converter is ticking. Sounds almost like a stuck lifter but not that loud. It's makes the noise in forward, neutral and reverse idling. Reverse is quieter but the sound does not go away. If I bring up the rpms it goes away after about 900-1000 rpm. Really wierd. Any thoughts?

Does it sound like a mechanical typewriter clicking (similar to a stuck lifter in a gasser)? If so, it MAY be normal.

http://www.dieselplace.com/forum/showthread.php?t=130732&highlight=typewriter+sound

http://www.dieselplace.com/forum/showthread.php?t=123587&highlight=typewriter+sound

Yours may be different, but I thought I would put it out there.
Mine seems to be MUCH more pronounced in the colder weather.

 

[redws6rocket]

that is a normal condtion that all duramax's do. there is a tsb about that!

 

[C.A.P]

hmmm flexplate ! dont think built converter should tick !

 

[astieg]

Normal mine did it then it just disappeared :wtf1: is my thoughts
has not returned as of yet 'knock on wood'

 

[maxy]

MIne does that to .I just thought it was normal.

 

[1000hp]

The truck has 66,000 miles on it and never did it before.

 

[maxy]

The truck has 66,000 miles on it and never did it before.

Some take a while i guess from what im told and some start when there new.Just the trait of the drivetrain says one of my buddys.

 

[1000hp]

It's almost a ratcheting sound when you are coasting to a stop from 10mph. The ratcheting noise slows down as the truck slows down.

 

[epb091786]

Sometimes a multiple disk converter will rattle. Sounds just like a ticking coming from the converter. I can hear mine from time to time when sitting in a drive through when the truck is cold.

When was your converter installed?? Because it could be that the converter bolts have loosened up.

Or you could have broken your flexplate, which is not so uncommon.

Bentley

 

[1000hp]

It was reinstalled about 2 months ago.

 

[epb091786]

It was reinstalled about 2 months ago.

I might be way off base, but for peace of mind you might as well pull the starter out and cheak the TC bolts.

Bentley

 

[jmg343]

Normal mine did it then it just disappeared :wtf1: is my thoughts
has not returned as of yet 'knock on wood'

Me too. Like Bentley said, for peace of mind I did drop my starter and checked my converter bolts and all was good. I thought broken flexplate for a minute too, but noise is gone, truck runs and shifts great. Noise came for about 2,000 miles and has been gone for 20,000 so I'm marking it up to being normal.

 

[redws6rocket]

this noise is heard alot and often mistaken. when the duramax's first came out we were puzzled on the noise but gm soon came out with a tsb saying it is normal and nothing can be done to correct it!

 

[redws6rocket]

Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax™ diesel engines have this condition; however, some are more audible than others. Engine build variation from engine to engine contributes to differences in perceived volume. All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards.

This noise is caused by the relationship of the engine cylinder block, crankshaft journals, bearing inserts and the oil film. This relationship may allow a vibration that resonates through the cylinder block and is heard as a metallic ticking noise. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter.

This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past. Many manufacturers such as Isuzu, Hino, Mitsubishi, and Nissan report a similar condition in their diesel engines. Testing and engine teardowns with this condition reveal no condition that would affect reliability or durability of this engine.

Dealers should not attempt to compare any customer vehicles exhibiting this noise with other similar vehicles as the noise is different from vehicle to vehicle and this may lead to the incorrect conclusion that the vehicle has a condition. This noise is a normal operating characteristic of the engine. This noise has no short or long term effects on the engine. Do not attempt repairs for this noise.

Important: Replacing the engine or internal components for this noise will not reduce or eliminate the noise

 

[vacarellab]

Is this the same noise i am hearing in park, neutral but goes away in drive or reverse? kinda sounds like a distant ratcheting, became more evident and audible after pml deep pan and 5 to 6 speed conversion.

 

[DURAtotheMAX]

what kind of converter?

 

[MaxFarmer]

As long as it doesnt sound like this--
http://www.dropshots.com/day.php?userid=61254&cdate=20060111&ctime=132729
Flexplate........

 

[Gray Gmax]

As long as it doesnt sound like this--
http://www.dropshots.com/day.php?userid=61254&cdate=20060111&ctime=132729
Flexplate........

WOW, no kidding.

 

[ratlover]

I might be way off base, but for peace of mind you might as well pull the starter out and cheak the TC bolts.

Bentley

I agree