Something in my clutch, flywheel set up has a rattle when I stab the throttle and if I pull much at all the clutch will start to slip. ( RPMs raise and the MPHs don't follow in suit) hence I think somethings got to be wrong. I was wondering could it be the DMF? I have heard a lot of bad things about it (DMF). Is there anything that GM has found to be wrong with them or am I going to have to come up with all the money myself? Didn't know some say GM covers the replacement of the flywheel and labor or is that not true. Small local dealership says he has never heard anything bad about the DMF but some people that know that dealership says they don't know much and like to mess people around on possible warrenty work. If you could give me something to convence them that GM does know that there is a problem with the older DMF or have many many people told me wrong? I just need some hard proof to print them off to show them that there is a problem. The guy there says that he has work with clutch all his life and said that a DMF would never make a clutch slip it would just make a rattle. Please let me know what you do I would be very greatful.:help: :driver:

Thanks
Nathan

A slipping clutch wouldnt really have anything to do with the dual mass, that would be worn or over powered, but here is the TSB on the flywheel

Excessive Shifter and/or Engine Vibration, Bearing Growl and/or Rattle Type Noise While Depressing or Releasing Clutch Pedal (Replace Flywheel and Flywheel Mounting Bolts) #04-07-31-006A - (Dec 9, 2004)

</TABLE>Excessive Shifter and/or Engine Vibration, Bearing Growl and/or Rattle Type Noise While Depressing or Releasing Clutch Pedal (Replace Flywheel and Flywheel Mounting Bolts)
2001-2005 Chevrolet Silverado

2001-2005 GMC Sierra

with 6.6L Duramax™ Diesel (RPOs LB7, LLY) and Manual Transmission (RPO ML6)

This bulletin is being revised to add the 2005 model year, VIN breakpoints and include the replacement of the eight flywheel mounting bolts. Please discard Corporate Bulletin Number 04-07-31-006 (Section 07 -- Transmission/Transaxle).

Built Prior to the following VIN Breakpoints:

<TABLE width="100%" border=1><TBODY><TR><TH vAlign=bottom align=middle>Plant

</TH><TH vAlign=bottom align=middle>VIN Breakpoint

</TH></TR><TR><TD vAlign=center align=middle>Flint, MI

</TD><TD vAlign=center align=middle>5F836256

</TD></TR><TR><TD vAlign=center align=middle>Pontiac, MI

</TD><TD vAlign=center align=middle>5E148789

</TD></TR></TBODY></TABLE><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss1-1576796">
Condition

Some customers may comment on a bearing growl or rattle-type noise while depressing or releasing the clutch pedal. Some customers may comment on excessive shifter or engine vibration. In some cases, the excessive vibration may result in an injector balance rate fluctuation condition.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss2-1576796">Cause

The steel clutch thrust washer may wear down the flywheel bushing prematurely, causing an excessive vibration condition.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss3-1576796">Diagnostic Tips

The bearing growl/rattle-type noise and or vibration is eliminated with the clutch fully engaged or disengaged.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss4-1576796">Correction

Replace the flywheel assembly with a Dual-Mass Flywheel, P/N 24232434. Refer to the applicable SI procedure below.

Important: The eight flywheel mounting bolts, P/N 97226124, must be replaced when service requires removal or replacement of the flywheel.


<TABLE border=0><TBODY><TR><TD vAlign=top> • </TD><TD vAlign=top>Engine Mechanical - 6.6L (LB7) -- Engine Flywheel Replacement - Manual Transmission (SI Document ID #1217874) </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top> • </TD><TD vAlign=top>Engine Mechanical - 6.6L (LLY) -- Engine Flywheel Replacement - Manual Transmission (SI Document ID #1364525) </TD></TR></TBODY></TABLE>
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss5-1576796">Parts Information

<TABLE width="100%" border=1><TBODY><TR><TH vAlign=bottom align=middle>Part Number

</TH><TH vAlign=bottom align=middle>Description

</TH><TH vAlign=bottom align=middle>Qty

</TH></TR><TR><TD vAlign=center align=middle>24232434

</TD><TD vAlign=center align=middle>Flywheel, Manual Trans., Dual-Mass

</TD><TD vAlign=center align=middle>1

</TD></TR><TR><TD vAlign=center align=middle>97226124

</TD><TD vAlign=center align=middle>Bolts, Flywheel Mounting

</TD><TD vAlign=center align=middle>8

</TD></TR></TBODY></TABLE>
Parts are currently available from GMSPO.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1576796&psdid=271&evc=sm#ss6-1576796">Warranty Information

For vehicles repaired under warranty, use:

<TABLE width="100%" border=1><TBODY><TR><TH vAlign=bottom align=middle>Labor Operation

</TH><TH vAlign=bottom align=middle>Description

</TH><TH vAlign=bottom align=middle>Labor Time

</TH></TR><TR><TD vAlign=center align=middle>J1420

</TD><TD vAlign=center align=middle>Flywheel (Manual Transmission/Transaxle) - Replace

</TD><TD vAlign=center align=middle>Use published labor operation times

</TD></TR></TBODY></TABLE>


<TABLE width="100%"><TBODY><TR><TD align=left width=778>GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
</TD><TD align=middle width=42>http://service.gm.com/engif/000/999/999/999999994.gif </TD><TD align=middle width=167>WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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