I beleive you have to do a crank re-learn....you can do a search for this subject...

Per Solstice Service Manual page 10-86:

If the ECM is replaced a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn on page 6-553.

Page 6-553 is devoted to how to perform the learn.
It requires a scan tool, to see if the P0315 was successful.

Dealer does it, unless you have a good scan tool and the procedure.

__________________
VIN #4744, Cool, Deposit 5-28-05, Delivery 12-10-05
VA/MD/DC Solstice Club solsticeclub@yahoo.com

~~~~~~~~~~~~~~~~~~~
Pontiac builds excitement...
Saturn has rethought it's image...
The time has come for the enthusiasts...
NASSOA(TM)
Founding Member-Vendor and Marketing Coordinator
~~~~~~~~~~~~~~~~~~~