Hey,
yesterday i did some drag on a 1/4. On my last race when i start the dash starting to flash and cluster light are all on.. then its stop.. But now each time the car take a bump on the road the cluster flash.. Its like when you start the car ,, I feel that the engine will shutdown but all stuff goes good after.. Did someone have did issue too??

I have a 2005 Cavalier 2 door stock. (Only aftermarket radio with sub and short ram)