rickrobles@gmail.com Posted September 15, 2007 Report Share Posted September 15, 2007 I have a 1992 Deville recently the speedometer/ gauges/ heat and ac control stopped working. what could cause this? Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted September 15, 2007 Report Share Posted September 15, 2007 Problem with a connection or fuse on a common circuit for the effected systems is my guess. This is the type of thing the factory shop manual is great for, as you can look up the circuit for each effected system and determine what they share. Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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