why is my speed odometer reading speed is going 2 times faster than I'm going ?

Asked by Nov 30, 2014 at 11:28 AM about the 2007 Pontiac Grand Prix Base

Question type: Maintenance & Repair

If i'm going 60 mph my speed odometer reading shows 120 mph.

2 Answers

5,375

Possibly your speed sensor. It mounts on your transmission and sends electrical impulses to your speedometer and odometer. The old days a speedometer cable did it mechanically

3 of 3 people found this helpful.
3,185

Make sure your speedometer is set to MPH, not km/h. You can change this using the little display above the radio. Change the display units to "ENGLISH".

8 of 8 people found this helpful.

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