Question about 1999 Cadillac DeVille
The oil pan gasket is a complex task. Due to the design of the Northstar engine,ie the exhaust crossunder exhaust pipe either the engine has to be removed from the car or remove the transmission.... The oil pan is a two piece assembly. Upper and lower. Yhank you
Posted on Sep 03, 2010
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Posted on Jan 02, 2017
SOURCE: Oil Pan Gasket
yes i have and its a nitemare ,dares one bolt u can not get at becauce its under the drive train in the corner of the sump .to take out sump you have to take out drive train u will no what i am talking about if u have started the job..good luck to u mate..
Posted on Oct 09, 2008
There likely is a spec for oil pan but unless you are a finatic, you really don't need to know what it is. Simple rule: Don't crank down ******* any fastener. If corners near crank ends have larger fasteners, you can tighten them a bit more than on siderails. Before tightening anything, install all bolts finger tight, to ensure that they are not cross threaded. To avoid warping pan, tighten from the center of the pan, working towards both ends, alternating from side to side as you go. When you are finished, go over it again, using the same amount of force on each bolt. As I said, end bolts can if larger in diameter, be tightened more but be careful not to tighten so much that you will either split or push the gasket out the sides.. Anywhere two gasket ends **** together, I recommend using a sensor -safe dab of silicone. An oil pan is not under any mechanical stress or pressure. I have used this method for many years and NEVER had one leak. If you really need #s, small fasteners get about 12-15in lbs, larger ones about 20.
Posted on Dec 31, 2008
Remove motor mount bolts and rear transmission crossmember bolts or nuts,suppport engine/trans. see if u have enough clearance between pan and axle remove pan. if not, split the exh away from the manifolds. worth a try
Posted on Dec 22, 2009
The engine does have to be raised. The bolts are not easy to get to until the engine is lifted and the engine mount is removed. I'm doing this job right now and the book time is around 5 hours.
Posted on Jan 30, 2010
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