Buick LaCrosse dies while driving on interstate and restarts on its own on Buick LaCrosse

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Buick LaCrosse owners report experiencing issues where the vehicle dies while driving on the interstate and then restarts on its own. These problems may be attributed to electrical issues, such as a blown fuse in the fuse block, which can cause the car to stall unexpectedly. Additionally, some owners have reported that a faulty ICM ground wire can lead to shorts and stalling due to insulation wear over time. Furthermore, it is advised to clean the throttle body and inspect the cam and crank sensor wiring, as well as monitor fuel pressure while driving, to identify any drops that may occur prior to stalling. Proper diagnosis and maintenance are crucial for preventing these issues in the Buick LaCrosse.

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