Question about 1991 Cadillac DeVille
PRNDL SWITCH PROBLEM IS E91 ACCORDING TO THE BOOK, I LOOKED IT UP IN.
PRNDL stands for Park, Reverse, Neutral, Drive, Low, the same things found on your automatic transmission shifter labels.
The switch is probably bad. Replace it or check connections to it, or check that the Reverse lights go on when the indicator says it is in Reverse on the Dash.
SES light may be on due to this problem.
Maybe not rotated or calibrated right to the shifting positions. I never had this problem in a 1990 Cadillac Deville which is similar to yours.
Posted on Jul 03, 2010
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Posted on Jan 02, 2017
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