Supercharger Rattle Sound Bulletin...

[2014CamaroZL1]

Topic already beaten to death, but just saw this posted:

http://sandyblogs.com/techlink/?p=3690

Supercharger Rattle Sound
September 18, 2014

On some 2014 CTS-V and Camaro models equipped with the 6.2L engine (RPO LSA),
and some 2009-2013 CTS-V and Camaro models equipped with the 6.2L engine (RPO LSA)
that have had a service replacement supercharger installed after November 2013,
a flutter or buzz sound may occur at 800-900 rpm (low rpm) with the vehicle in 2nd or 3rd gear (high load).
The sound may be mistaken as clutch chatter or a heat shield buzzing noise.

The supercharger now has a solid coupling for improved reliability.
Pulses from the accessory drive at low rpm, high load may cause a slight rattle in the supercharger gear train.
This is normal condition. No repairs should be made for this condition at this time.

[Admiral Ballsy]

That's PIP5192, from last April.

[2014CamaroZL1]

From last April ?
It was only posted yesterday.
That is quite a lag.
Carry on, then !

[ZMEnow]

a flutter or buzz sound may occur at 800-900 rpm (low rpm) with the vehicle in 2nd or 3rd gear (high load).
The sound may be mistaken as clutch chatter or a heat shield buzzing noise.

Interesting since I know of at least 3 that don't...

[HDRDTD]

Originally Posted by ZMEnow

a flutter or buzz sound may occur at 800-900 rpm (low rpm) with the vehicle in 2nd or 3rd gear (high load).
The sound may be mistaken as clutch chatter or a heat shield buzzing noise.

Interesting since I know of at least 3 that don't...

The key word there is 'may'.

Just like some SC's may develop the dreaded 'marbles in a can rattle', while some may not.

[HDRDTD]

Originally Posted by 2014CamaroZL1

Topic already beaten to death, but just saw this posted:

http://sandyblogs.com/techlink/?p=3690

Supercharger Rattle Sound
September 18, 2014

On some 2014 CTS-V and Camaro models equipped with the 6.2L engine (RPO LSA),
and some 2009-2013 CTS-V and Camaro models equipped with the 6.2L engine (RPO LSA)
that have had a service replacement supercharger installed after November 2013,
a flutter or buzz sound may occur at 800-900 rpm (low rpm) with the vehicle in 2nd or 3rd gear (high load).
The sound may be mistaken as clutch chatter or a heat shield buzzing noise.

The supercharger now has a solid coupling for improved reliability.
Pulses from the accessory drive at low rpm, high load may cause a slight rattle in the supercharger gear train.
This is normal condition. No repairs should be made for this condition at this time.

Nothing new here, it was all spelled out in the TSB that was issued.