Question about 2003 Cadillac Deville
Did you have the battery disconnected from the car?
I had a similar problem. The TPS (Throttle Position Sensor) loses the home position.
The manual says to place the ignition in run; ignition on for 3 minutes (connect a battery charger while you do this) without engine running. It should home the TPS.
Worked for me.
Posted on Oct 06, 2009
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Posted on Jan 02, 2017
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