This might help, found a bulletin for this problem. Subject: Automatic Transaxle/Transmission Shift Lever May Not Shift Out of Park (Replace Brake Transaxle Shift Interlock (BTSI) Solenoid)
Models: 2004-2006 Chevrolet Aveo
2004-2007 Chevrolet Optra (Canada Only)
2005-2006 Pontiac Wave (Canada Only) Some customers may comment on either of the following conditions:
"Â The automatic transaxle shift lever may not shift out of the park position and the ignition key cannot be removed (North American vehicles only).
"Â The automatic transaxle shift lever may not shift out of the park position (vehicles outside of North America only). Replace the brake transaxle shift interlock (BTSI) solenoid. 96858794
Solenoid A Select Lever (Left Hand Drive)
96858795
Solenoid A Select Lever (Right Hand Drive)here are the part numbers. Post back if this fix's it.
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Saturday, April 19th, 2008 AT 9:11 PM