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  1. Chevy Impala 9th Gen Discussion
    I have an issue with my car where the speedometer will start to jump at red lights. Sometimes it jumps all the way to the max displays "speed limited to 148mph" on the display. A few times the engine cut out after that happened. No error codes. I was speaking with someone who told me that...
  2. Chevy Impala 9th Gen Discussion
    The speedometer in my 2009 Impala Police package sometimes starts jumping at red lights. Only happens when the car is at a stop in Drive. If I start moving or shift to anything other than Drive it stops. The tachometer stays steady. Occasionally when it happens it'll jump all the way to the max...
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