Tighten as follows:
InstallationProcedure:
Important
-The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alingment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission belllhousing plane.
-Do not reuse the oil pan gasket.
-It is not necessary to rivet the NEW gasket to the oil pan.
1. apply a 5mm (0.20 in) bead of sealant GM U.S. P/N 12378190, or equivalent 20mm (0.80 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface.
2. Apply a 5 mm (0.20 in) bead of soealant GM U.S. P/N 12378190, or equivalent 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface.
Important: Be sure to align the oil gallery passages in the oil pan and engine block properly with the oil pan gasket.
3. Pre-assemble the oil pan gasket to the pan.
-Install the gasket onto the pan.
-Install the oil pan bolts to the pan and through the gasket.
4. Install the oil pan, gasket and bolts to the engine block.
5. Tighten the oil pan bolts until snug. Do not overtighten.
6. Install the transmission bolt and stud on the right side until snug, if equipped with 4L60-E automatic transmission.
7.1 Tighten the oil pan and oil pan-to-oil pan front cover bolts to 25 N•m (18 lb ft).
7.2 Tighten the oil pan-to-rear cover bolts to 12 N•m (106 lb in).
7.3 Tighten the bellhousing, converter cover, and transmission bolts/stud to 50 N•m (37 lb ft).
7.4 Install engine harness to front of oil pan.
8. Connect the oil level sensor electrical connector.
9. Install the transmission cover and bolt.
Tighten the transmission cover bolt to 12 N•m (106 lb in).
10. Install the crossbar.
11. Install the crossbar bolts.
tighten the crossbar bolts to 100 N•m (74 lb ft).
12 Install the starter motor.
these are the oil pan replacemnent instructions directly from the manual. Hope it helps ya!
Ed
If you need me to look up more, you will have to wait. My SSR goes in to the dealer on Monday to get the new hinges on and to have them check out the intermittent horn problem and the object hitting the fan on my blower motor for the AC controls. No tellin how long they will be keeping her in the body shop, but John is good with his work and my manuals should help him do even better!