OEM Cadillac DeVille Transmission Pan

Cadillac DeVille Transmission Pan Parts Questions & Experts Answers

• Oil Pan
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  Q: How to service the Transmission Pan on a HYDRA-MATIC 4T80E on Cadillac DeVille?

  A: The service of fluid pan requires you to raise the vehicle and provide support while installing a drain pan underneath the transmission bottom pan. Area the drain pan underneath the transmission bottom pan before fluid begins to flow. The bottom pan removal on a hydra-matic 4t80e allows fluid drainage from the side cover but fails to empt the Torque Converter contents; extracting fluid from the side cover requires accessing the Drain Plug in the case following bottom pan removal yet this does not usually require Torque Converter drainage. You should drain fluid from the pan while loosening the bottom pan bolts before taking out the bottom pan bolts and the pan and gasket together. Dents or nicks on the bottom pan sealing surface need replacement if they are detected. Cleaning both the bottom pan and case sealing surfaces will achieve proper sealing when the bolts and tapped holes remain both clean and dry to achieve optimal torque levels. Every time the bottom pan needs service the original gasket must be replaced with a new one before reinstalling the bottom pan. Put the new gasket together with the bottom pan and bolts on it before tightening the bolts manually. Three pan bolt installations require correct torque combination according to this order: 3 nm (27 inch lbs.) followed by 6 nm (53 inch lbs.) and concluding with 12 nm (106 inch lbs.). Finally lower the vehicle then fill it with dexron-iii transmission fluid per the required amount.