Upper Oil Pan Installation

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Determining Sealant Bead Dimensions

Courtesy of GENERAL MOTORS CORP.

Apply a 2-3 mm wide by 0.5-1.5 mm bead of GM P/N 12378521 (Canadian P/N 88901148) sealant to the upper oil pan mating surfaces.

Fig 2: View Of Upper Oil Pan

Courtesy of GENERAL MOTORS CORP.

Install the upper oil pan to the engine block.

Fig 3: Upper Oil Pan Bolts Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

Install the upper oil pan bolts.
Tighten: Tighten the upper oil pan bolts in sequence to 20 N.m (15 lb ft).

Fig 4: View Of Flywheel Housing To Upper Oil Pan Bolts

Courtesy of GENERAL MOTORS CORP.

Install the two flywheel housing to upper oil pan bolts.
Tighten: Tighten the two flywheel housing to upper oil pan bolts to 50 N.m (37 lb ft)

Fig 5: View Of Oil Level Indicator

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Install the oil level indicator tube.
Install the oil level indicator tube bracket bolt.
Tighten: Tighten the oil level indicator tube bracket bolt to 21 N.m (15 lb ft).