Oil Pan: Service and Repair

V6-231 & 252
Exc. 1982-85 Riviera
1. Raise and support front of vehicle.
2. Remove flywheel cover and exhaust crossover pipe. Remove engine mount retaining bolts, then raise engine with a suitable lifting device to gain clearance.
3. Drain engine oil into a suitable container.
4. Remove oil pan bolts, then pan.
5. Reverse procedure to install. Some engines use R.T.V. silicone sealer instead of a gasket for oil pan to crankcase sealing. When replacing the oil pan, either R.T.V. sealer or a gasket can be used during reassembly. If R.T.V. sealer is used, the pan rail and block sealing surfaces should be cleaned thoroughly and a 1/4 inch bead of sealant applied evenly to the pan rail, avoiding any breaks or gaps in the sealer during application.



1982-85 Riviera
1. Disconnect battery ground cable.
2. Remove one final drive to transmission bolts.
3. Install suitable engine support fixture.
4. Raise and support vehicle.
5. Remove idler arm bracket from frame, then position steering wheel at left lock.
6. Disconnect drive axles from output shafts, then battery cable support from output shaft support.
7. Disconnect output shaft support from engine block.
8. Remove remaining final drive to transmission bolts.
9. Position suitable transmission jack under final drive, then remove final drive cover and final drive unit.
10. Remove starter, then flywheel cover.
11. Remove oil pan bolts, then oil pan.
12. Reverse procedure to install. Some engines use R.T.V. silicone sealer instead of a gasket for oil pan to crankcase sealing. When replacing the oil pan, either R.T.V. sealer or a gasket can be used during reassembly. If R.T.V. sealer is used, the pan rail and block sealing surfaces should be cleaned thoroughly and a 1/4 inch bead of sealant applied evenly to the pan rail, avoiding any breaks or gaps in the sealer during application.