Replacing oil pan gasket on 1990 chevy corsica

SOURCE: Oil Pan Gasket

the oil pump is in the oil pan attached to the block. there for you have to raise the engine so you can see the oil pump and get the gasket under it to get it to slide into place. my suggestion is to raise the engine and replace the gasket

SOURCE: change oil pan gasket

This Is A Fairly SIMPLE Procedure The IMPORTANT Thing is To Use Generous Amount of Sealant and Allow Plenty of TIME for Sealant to CURE After Pan is On and Tightened Over Night At Liest


REMOVAL

1. Disconnect negative cable from battery and remove engine oil dipstick.
2. Raise vehicle on hoist and drain engine oil.
3. Remove bending brace to transaxle attaching bolt.
4. Remove bolts attaching dust cover to transaxle housing. Lower dust cover to gain access to oil pan bolts.
5. Remove oil pan screws and remove oil pan.

1. Clean surfaces and apply a 1/8 inch bead of Mopar(R) Silicone Rubber Adhesive Sealant or equivalent, at the parting line of the chain case cover and the rear seal retainer.
   1. Use a new pan gasket.
   2. Install pan and tighten screws to 12 Nm (105 in. lbs.).
   3. Install dust shield and bending brace to transaxle housing.
   4. Lower vehicle and install oil dipstick.
   5. Connect negative cable to battery.
   6. Fill crankcase with oil to proper level.

SOURCE: oil pan gasket

if you like spending a lot of time under the car.  Also determine if you can easily slip the pan off or if you have to remove suspension components.  I'd have a shop do it.

SOURCE: have a serious oil leak.

I have a 96 grand caravan and had the same problem which was caused by a leaking inner axle shaft seal

SOURCE: have an oil leak from somewhere under the engine.

check the oil pressure sending unit,clean engine then look to see where it is leaking,could be oil sending unit,dist drive seal or engine rear main.Need to determine wich side of engine.