Oil Pan Installation

Tools Required 

EN 46109  Guide Pins. See Special Tools .

Fig 1: Identifying Oil Level Sensor
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to FASTENER NOTICE .
1. Install the oil level switch (1).

   Tighten:  Tighten the oil level switch to 20 N.m (15 lb ft).

Fig 2: Applying RTV Sealant
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: 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: Identifying EN 46109 Guide Pins
Courtesy of GENERAL MOTORS CORP.
4. To prevent shifting of the oil pan, install one EN 46109  into a bolt hole in each side of the lower crankcase. See Special Tools .
Fig 4: View Of Oil Pan
Courtesy of GENERAL MOTORS CORP.
5. Position the oil pan onto the lower crankcase.
Fig 5: Identifying Oil Pan Bolts
Courtesy of GENERAL MOTORS CORP.
6. Loosely install several of the oil pan bolts.
7. Remove the EN 46109  . See Special Tools .
8. Finish loosely installing the remaining oil pan bolts.
Fig 6: Installing Oil Pan Bolts
Courtesy of GENERAL MOTORS CORP.
9. Tighten the oil pan bolts in the sequence shown.

   Tighten: 

   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.