folf4fun Posted May 12, 2009 Report Share Posted May 12, 2009 I've purchased a new AC Delco transmission filter, and it came with a circular fitting for the top of the filter. Since I'm having issues pulling the old fitting out I am wondering how crutial it is to replace the fitting(5/8" round by 1/2" tall) at the same time as the filter. I wouldn't imagine AC Delco putting these fittings into the filter bags if they were not needed, but if the old fitting is still in good shape can it be re-used? Am I asking for trouble by wanting to re-use the old fitting that may have been in this trans since the factory? Also are there any tricks to pulling the old fitting out of the transmission? Can I use dental tools to pry it out safely? Link to comment Share on other sites More sharing options...
Dave in Texas Posted May 13, 2009 Report Share Posted May 13, 2009 That lip ring seal is pressed into the case and shouldn't be removed unless a replacement is necessary. If it ain't broke, don't fix it. Use a neoprene gasket, not cork, clean all the mating surfaces and torque the bolts to the correct specification(10ft/lbs in my case) GM Reman 4.1 engine Dec '08 Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 13, 2009 Report Share Posted May 13, 2009 I've purchased a new AC Delco transmission filter, and it came with a circular fitting for the top of the filter. Since I'm having issues pulling the old fitting out I am wondering how crutial it is to replace the fitting(5/8" round by 1/2" tall) at the same time as the filter. I wouldn't imagine AC Delco putting these fittings into the filter bags if they were not needed, but if the old fitting is still in good shape can it be re-used? Am I asking for trouble by wanting to re-use the old fitting that may have been in this trans since the factory? Also are there any tricks to pulling the old fitting out of the transmission? Can I use dental tools to pry it out safely? That fitting SHOULD be removed rubber becomes brittle and it will eventually leak THAT is why they include that seal. Use a screwdriver to crush it, just bend it out of shape and it WILL COME OUT, with a needle nose plier. I have done this on a 91 and 96 so i KNOW it CAN be done, with no special tools You are correct the DO NOT put that part in the box for you to ignore it or throw it away 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 Link to comment Share on other sites More sharing options...
Dave in Texas Posted May 13, 2009 Report Share Posted May 13, 2009 I always fall for the FSM recommendations. That is what I posted.....sorry 'bout that. GM Reman 4.1 engine Dec '08 Link to comment Share on other sites More sharing options...
KHE Posted May 13, 2009 Report Share Posted May 13, 2009 If the OEM pan gasket has steel bushings at the hole locations, I would get an OEM pan gasket. None of the aftermarket gaskets have the steel sleeves and the pan will be distorted if you torque the bolts to the proper spec. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 13, 2009 Report Share Posted May 13, 2009 I always fall for the FSM recommendations. That is what I posted.....sorry 'bout that. That might be the case with your year, but the 91 and 96 I have changed were easy, and I would recommend changing it as the rubber gets brittle I was not trying to contradict you 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 Link to comment Share on other sites More sharing options...
KHE Posted May 14, 2009 Report Share Posted May 14, 2009 One other thing to add is that the '94 Deville with the 4.9 engine had the 4T60-E trans. That trans had a bimetallic valve that keeps most of the fluid in the upper portion of the trans when the fluid is warm. Change the fluid cold and you will get more of the old fluid out. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
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