Oil Pan Installation

Special Tools 

EN 46109  Guide Pins

For equivalent regional tools, refer to Special Tools .

Fig 1: Identifying Oil Level Sensor
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Refer to Fastener Caution .

1. Install the oil level switch (1) and tighten to 20 N.m (15 lb ft).
Fig 2: Applying RTV Sealant
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Ensure components being sealed with room temperature vulcanizing (RTV) sealant are assembled within 20 minutes. Components assembled after the RTV sealant has skinned-over, approximately 20 minutes, will not seal properly.

2. Completely fill and slightly overfill the oil pan seal groove with a continuous bead of RTV sealant GM P/N 12378521 (Canadian P/N 88901148) or equivalent.
3. Ensure the RTV sealant GM P/N 12378521 (Canadian P/N 88901148) or equivalent bead is higher than the oil pan sealing surface (1) by 3 mm (0.118 in).
Fig 3: Oil Pan Guide Pins
Courtesy of GENERAL MOTORS COMPANY
4. To prevent shifting of the oil pan, install one EN 46109  pins into a bolt hole in each side of the lower crankcase.
Fig 4: View Of Oil Pan
Courtesy of GENERAL MOTORS COMPANY
5. Position the oil pan onto the lower crankcase.
Fig 5: Identifying Oil Pan Bolts
Courtesy of GENERAL MOTORS COMPANY
6. Loosely install several of the oil pan bolts.
7. Remove the EN 46109  pins.
8. Finish loosely installing the remaining oil pan bolts.
Fig 6: Installing Oil Pan Bolts
Courtesy of GENERAL MOTORS COMPANY
9. Tighten the oil pan bolts in the sequence shown.
   1. Tighten the oil pan bolts a first pass to 8 N.m (71 lb in)in the sequence shown.
   2. Tighten the oil pan bolts a final pass to 12 N.m (106 lb in)in the sequence shown.
10. Clean off any sealant that has protruded to the exterior of the engine.