2005 Gmc Sierra Speedometer Reads 70 Mph While Car Sitting Still Other Lights

2005 GMC SIERRA
12,000 MILES
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The speedometer reads 70 mph while the car is sitting still. Other lights in that part of dash are also not right. Is it safe to drive to the Gmc dealer for repair?
Feb 2, 2013 at 12:42 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
If there's no drivability problem go for it-Sounds like electrical to me-also have the vehicle speed sensor circuit checked out-
Feb 2, 2013 at 1:23 PM
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