milansky

seville 1996 transmission stuck in second gear

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47 minutes ago, milansky said:

0Line pressure test update: minimum and maximum line pressure as listed in GM manual within required limits in Drive Park Reverse and Neutral.

List of codes available: TC0027. TC0073. P0741. AC1340 and codes involving memory alive.... No codes for shift solenoids.

Sonnax company is asking for ridiculous money just for tool set in order to install valve body rebuild kit so better choice is going for a rebuilt lower valve body unit with guarantee for 239$. 

When changed along with EBCTM unit will let you about car's behaviour. Thx for help on this so far.

Good luck, anxious to see your results


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

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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keep us posted. Best of luck to you


GM FAN FOREVER

Nice, clean, luxury= fine automobile

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On ‎12‎. ‎7‎. ‎2017 at 5:38 PM, BodybyFisher said:

Good luck, anxious to see your results

Hi guys, here is the update after few weeks of waiting for parts. As mentioned in previous communication, Cadillac Seville has been suffering with "Stuck in second gear" condition, ABS and TRACTION CONTROL light on. Used EBTCM unit (the brain part) replaced = ABS and Traction control light is GONE, car breaks normally. New LOWER VALVE BODY put in transmission = car works and shifts as smooth as before. Happy, car fixed after 4 years of on and off finding what was wrong with it. Next day car is stuck in second gear again. I mean WOW. What the ... 

 

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Hi guys, here is the update after few weeks of waiting for parts. As mentioned in previous communication, Cadillac Seville has been suffering with "Stuck in second gear" condition, ABS and TRACTION CONTROL light on. Used EBTCM unit (the brain part) replaced = ABS and Traction control light is GONE, car breaks normally. New LOWER VALVE BODY put in transmission = car works and shifts as smooth as before. Happy, car fixed after 4 years of on and off finding what was wrong with it. Next day car is stuck in second gear again. I mean WOW. What the ... 

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Check that big transmission connector....


THERE IS ALWAYS ENOUGH TIME TO DO THE JOB RIGHT - THERE IS NEVER ENOUGH TIME TO DO THE JOB AGAIN !!!

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16 hours ago, OldCadTech said:

Check that big transmission connector....

Regarding that tranny stuck in second gear. When replacing lower valve body we again found and removed some dirt - debris like from a cloth used for wiping parts clean. Question stands: is it possible for torque converter that had not been replaced or thoroughly flushed to send debris into valve body or somewhere else and cause blockage?

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Yes, it is possible but as I recall, you did not have a lot of debris in the transmission prior to the rebuild. There is actually 2 different fluids in the torque convertor. There is a viscous convertor fluid that is very thick and if it leaks into the transmission fluid it turns the trans fluid to a very dark color.

GM came out with a notice against using shop rags to clean transmissions a long time ago. If the debris you found was shop rag material you may have to clean the valve body a few more times to remove all the material.


THERE IS ALWAYS ENOUGH TIME TO DO THE JOB RIGHT - THERE IS NEVER ENOUGH TIME TO DO THE JOB AGAIN !!!

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On ‎24‎. ‎8‎. ‎2017 at 4:44 PM, OldCadTech said:

Yes, it is possible but as I recall, you did not have a lot of debris in the transmission prior to the rebuild. There is actually 2 different fluids in the torque convertor. There is a viscous convertor fluid that is very thick and if it leaks into the transmission fluid it turns the trans fluid to a very dark color.

GM came out with a notice against using shop rags to clean transmissions a long time ago. If the debris you found was shop rag material you may have to clean the valve body a few more times to remove all the material.

Hi, looks like transmission is getting stuck due to some kind of debris causing problems in lower valve body. It is probably being sent into tranny from torque converter so we are planning to flush the tranny by running engine and letting fluid exit through the auxiliary cooling radiator in the front. But I have another problem regarding engine which is occurring when engine is cold and that is - very rough idle and engine stall, almost. When engine is hot problem disappears. The collant is disappearing as well as so it might be blown head gasket that was changed - 100 miles driven on new one. Im very concerned about FEL - PRO quality of head gaskets form ROCKAUTO that seem to give up. When removing intake manifold I found oil present on valves. Could that be seals on valves in camshaft?

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Absolutely will not hurt to flush the transmission.

If the debris is rag material and it is in the valve body, only way to remove the debris will be to take the valve body down and clean the valves


THERE IS ALWAYS ENOUGH TIME TO DO THE JOB RIGHT - THERE IS NEVER ENOUGH TIME TO DO THE JOB AGAIN !!!

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