For 1990-2009 cars

### Upper Oil Pan

1. Install the oil intake pipe.
2. Install the oil intake pipe bolts.

Tighten
Tighten the oil intake pipe bolts to 8 N·m (71 lb in).

3. Apply a bead of silicone sealing compound, GM P/N 12346286 or equivalent, in the bottom of the upper oil pan groove.

Keep the bead at least 10 mm (0.4 in) from the bolt holes to prevent carry over onto bolt threads.

4. Install the new rubber seal into the groove of the upper oil pan.

Important: Installation of the upper oil pan must be carried out within 10 minutes of applying the sealant.

5. Apply a 3 mm (0.12 in) bead of silicone sealant, GM P/N 12346286 or equivalent, on the OUTSIDE edge of the seal at the front of the upper oil pan and apply an identical bead on the INSIDE edge of the seal at the rear of the upper oil pan.

The beads will overlap at the middle of the upper oil pan as shown in the supporting illustration.

6. Install the upper oil pan bolts.

Tighten
Tighten the upper oil pan bolts to 15 N·m (11 lb ft).

### Lower Oil Pan

1. Install the oil level sensor to the oil pan (If removed).
2. Install the oil level sensor bolts.

Tighten
Tighten the oil level sensor bolts until fully seated. Do not strip the oil level sensor bolts.

3. Install the oil pan gasket.
4. Install the oil level sensor wire electrical connector to the upper oil pan and secure with the C-clip (1).
5. Install the lower oil pan to the upper oil pan.
6. Install the lower oil pan bolts.

Tighten
Tighten the lower oil pan bolts to 8 N·m (71 lb in).