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Trouble holding 4th gear


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Anyone know why 4th gear would slip on occasion but all other gears are fine? Could it be solenoids or a bad gear itself? I have heard that these tranmissions have weaker 4th gears. No codes. Thanks

92 Deville w/210k miles

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If you are talking about OD, you are probably having a problem. Check for codes? Did this just start?

Put the car in neutral, lift the hood race the engine to about 1200 to 1600 RPM and see if you get any noise..

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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It could be your TCC solenoid (sp?) is bad. I've heard that they are problematic. What year and make car? I can look up some tsb's for you and check it out.


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