Oil Pan Installation

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: The oil pan must be installed within five minutes of the sealer being applied or the sealer will begin to cure, causing an inadequate seal.

Apply sealant GM P/N 12346286 (Canadian P/N 10953472) to the side of the front cover (1) and rear crankshaft bearing cap (2), on both the left and right sides, 4 locations total.

Fig 1: View Of Front Cover & Rear Crankshaft Bearing Cap Sealant Points

GM677833

Courtesy of GENERAL MOTORS CORP.

Install the new oil pan gasket (404) into the oil pan groove.
Install the oil pan (400).

Fig 2: View Of Oil Pan & Gasket

GM1309994

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the oil pan bolts (1-12).
Tighten the oil pan bolts in sequence.
Tighten:
1. Tighten the oil pan bolts (1-12) a first pass in sequence to 10 N.m (89 lb in).
2. Tighten the oil pan bolts (1-12) a final pass in sequence to 25 N.m (18 lb ft).

Fig 3: View Of Oil Pan Bolt Tightening Sequence

GM677869

Courtesy of GENERAL MOTORS CORP.

Install the oil pan drain plug.
Tighten: Tighten the oil pan drain plug to 28 N.m (21 lb ft).

Fig 4: View Of Oil Pan Bolts

GM635648

Courtesy of GENERAL MOTORS CORP.

Lubricate the oil level sensor O-ring with engine oil.
Install the oil level sensor.
Tighten: Tighten the oil level sensor to 20 N.m (15 lb ft).

Fig 5: View Of Oil Level Sensor From

GM1310051

Courtesy of GENERAL MOTORS CORP.