# 2003 Buick LeSabre - Mystery locking

**URL:** <https://community.cartalk.com/t/2003-buick-lesabre-mystery-locking/141152>\
**Category:** Maintenance/Repairs\
**Tags:** buick\
**Created:** [May 28, 2019, 6:28pm UTC](https://community.cartalk.com/t/2003-buick-lesabre-mystery-locking/141152 "2019-05-28T18:28:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ChuckBucy](https://avatars.discourse-cdn.com/v4/letter/c/a88e4f/32.png) [@ChuckBucy](https://community.cartalk.com/u/ChuckBucy)\
**Post date:** [May 28, 2019, 6:28pm UTC](https://community.cartalk.com/t/2003-buick-lesabre-mystery-locking/141152/1 "2019-05-28T18:28:58Z")

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The car had been running and driven several miles with no trouble. I turned into a parking spot and then attempted to back up to straighten out. I put it in reverse and when I applied the gas there was no revving of the engine and no movement. I put it in Drive and again, no movement and no revving of the engine when the gas pedal was pressed. At that time the brake pedal locked hard. I turned the car off, waited a few moments and restarted and everything worked fine. The mechanic says if he can’t recreate it he can’t fix it. Any ideas?

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**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\
**Post date:** [May 28, 2019, 9:37pm UTC](https://community.cartalk.com/t/2003-buick-lesabre-mystery-locking/141152/2 "2019-05-28T21:37:23Z")

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Based on the fact that your brake pedal " locked hard" I’d say you had no engine vacuum and the engine simply stalled