2006 Pontiac Grand Prix Odometer

2006 PONTIAC GRAND PRIX
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CREED5
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Computer problem
2006 Pontiac Grand Prix 80000 miles

My odometer is showing that I am driving 90mph when I am only driving about 50mph. Is this a computer problem or sensor?
Feb 25, 2010 at 12:19 PM
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TOOOMANYTOYS
  • ✓ASE Certified Mechanic
  • 513 POSTS
  • ASE Certified Mechanic
Try tapping on the gauge cluster to see if it moves. If it does it may need a new cluster.
Feb 25, 2010 at 12:23 PM
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CREED5
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Where is this found on the 06 Pontiac Gran Prix?
Feb 25, 2010 at 12:34 PM
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TOOOMANYTOYS
  • ✓ASE Certified Mechanic
  • 513 POSTS
  • ASE Certified Mechanic
It is where you look at the gauges tap on the dash above it and on the plastic cover where speedometer is. To see if needle moves back.
Feb 25, 2010 at 8:45 PM
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DOGVOM
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50 mph = approximately 90 kph so check your speedometer and make sure it's reading MPH. On mine you can change the reading from Kilometers to MPH through the DIC. There should be a red light showing mph on the left side of the speedometer gauge, kilometers per hour will show on the right. A mechanic fiddling with the computer could have switched the reading.
Dec 5, 2010 at 4:47 AM
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