Jump to content
CaddyInfo Cadillac Forum

91 DeVille downshifting at speed


Recommended Posts

My 1991 Deville will downshift all by itself at speed, local and highway. When it happens its just like i slamed the selector to 1st. The engine screams!! Someone told me there is a speed sensor in the transaxle that needs replaced. He said they have little paddles that break off.

Anyone have any knowledge of this? Help!!!

JJ :(

Link to comment
Share on other sites


Read the OBD I codes. The way to do this is here:

http://www.caddyinfo.com/readingcodes.html

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...