The Under the Hood
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Dear Motor Medics, I own a 2005 Chevrolet Impala that I bought used in March of 2006 with 8,000 miles. The vehicle now has 182,000 miles, so it does not sit still very often.
I have been having problems with the speedometer and other instrument cluster gauges not working correctly. Sometimes the speedometer will stick on 60 and not drop down until I shut off and restart the car.
Is this a common problem with this type of vehicle and, if so, how do I fix it?
Doug in Minneapolis
Dear Doug, We have repaired several of these, but many are still ticking with well over 200,000 miles on them.
A general repair shop should be able to diagnose the issue and, if they find that it is within the speedometer, they can replace the unit with a rebuilt unit that is available from most auto parts stores. The units come pre-programed for easy installation.
When they order the unit, it can take a couple of weeks or so as they need to send your vehicle information like mileage and identification number to the manufacturer of the unit so that they can enter it into the replacement.
Once it arrives your shop can install the unit and they will have you sign a mileage affidavit stating that the mileage you gave them to enter the replacement was correct. They will then box up the old unit and send it back as a core. Take care, The Motor Medics
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