Hi 1sassi,
Thank you for the donation.
Shifter stuck in Park is due to the interlock system malfunctioning. Check if the brake lights are turning on when the brake pedal is depressed.
The transmission thunking into low gear is a malfunction from the transmission but could be due to the Park Neutral Position ( PNP ) switch.
Are all the gear indicator lights showing correctly?
Is the Check Engine Light indicating?
Get a free scan done at Autozone to retrieve for trouble codes and let me know the exact code if any found.
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Friday, July 2nd, 2010 AT 12:58 PM