Question about 1999 Cadillac DeVille
Most likely your Instrument Cluster contains Electronic "Stepper Motors" on all Needle Indicators. If this is the case, you should consult the Factory Website to detrermine if this is the case. I have replaced many in my 2004 Chevrolet Silverado which has 6 Stepper Motors. These typically exhibit erratic indications prior to total failure. The first to go was the Speedometer followed by Oil Pressure and eventually Temperature, Voltmeter and Tachometer. Obviously your vehicle is no longer covered under warranty. I strongly suggest that you find a Speedometer repair facility and have it checked professionally.
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
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