ZL1 supercharger recall?

[Azzkker]

Originally Posted by ZO6 Bryan

Does anyone have any actual data that performance is better with the replacement blower. Track times, dyno numbers, datalog?

Mine had a squealing front bearing that I think was the culprit of my performance gain. On the old unit I would get a slight delay from wot to boost building and it would not roast the tires from a roll in second due to this. The new one has instant response and builds boost much faster that it will light the tires up in second from roll and will break loose in the wot upshift to second and third which it never did before in third.
Mine must have been pretty bad.

[z28man2]

For those of you who got there sc replaced what is the part number they are using? Also how do we know if the new unit is the revised sc?

[ZMEnow]

Originally Posted by z28man2

For those of you who got there sc replaced what is the part number they are using? Also how do we know if the new unit is the revised sc?

Because it will have a solid isolator in the snout.

[Samson2029]

I agree about a likely performance gain. Seems to pull stronger and more easily. The old charger may have contributed to some drivetrain hp loss. My pulley had a lot of slack and the two spindles or rotors had many grooves.

[HDRDTD]

Originally Posted by z28man2

For those of you who got there sc replaced what is the part number they are using? Also how do we know if the new unit is the revised sc?

The GM Part # listed on my repair invoice shows..
19303635 Superchar 3.342 N

Others have reported that this is the same part number as the original SC, so visually, there may not be a way to tell from the outside.

However once it's replaced, you'll be able to tell from the lack of rattle as well as slightly improved response.

[z28man2]

That's strange mine was replaced last August and the part number on the side of the sc is 12622236. At the time I asked my dealer about that and they told me it was a differ part number than the original?

[ORLYHPD]

I just ordered a 2015 zl1 which arrives in about 2 weeks, does n e one know if the problem was fixed at the factory or is this something ill have to get done locally?

[blk 2013]

fixed early 2014

[ORLYHPD]

thank you

[Chief Bob]

Just had the supercharger recall done on my 2012 CTF. I swear I can feel the difference on power and throttle response! BTW Rodgers Chevrolet is an awesome dealership!!

[HDRDTD]

Originally Posted by z28man2

That's strange mine was replaced last August and the part number on the side of the sc is 12622236. At the time I asked my dealer about that and they told me it was a differ part number than the original?

All I know is what's listed on the repair invoice I have.

[ZMEnow]

Originally Posted by z28man2

That's strange mine was replaced last August and the part number on the side of the sc is 12622236. At the time I asked my dealer about that and they told me it was a differ part number than the original?

If it was replaced last August it's the same type they took off, which doesn't have a solid isolator. This is the main reason the TSB came out because they were replacing SC's that will just fail again.

[mlee]

Originally Posted by ZMEnow

If it was replaced last August it's the same type they took off, which doesn't have a solid isolator. This is the main reason the TSB came out because they were replacing SC's that will just fail again.

Mine was replaced in Dec and it did have the solid isolator

[ZL1-V]

Originally Posted by ZMEnow

If it was replaced last August it's the same type they took off, which doesn't have a solid isolator. This is the main reason the TSB came out because they were replacing SC's that will just fail again.

Is that a fact or an opinion? Please reference your source please? I had my unit replaced in April and it has the solid isolator. This supercharger is much quieter than the original unit.