OEM GMC Yukon XL 2500 Oil Pan

GMC Yukon XL 2500 Oil Pan Parts Questions & Experts Answers

• Oil Pan
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  Q: How to Replace an Oil Pan on GMC Yukon XL 2500?

  A: First, if you have a four wheel drive (4WD), you will need to pull out the inner axle housing nuts and washers from the bracket, and follow by supporting the front drive axle using a suitable jack. Then, remove differential carrier lower and higher mounting bolts and nuts, bring down the front drive axle, and remove the transmission cover bolt. If necessary, remove the Oil Pan skid plate bolts and the skid plate as well as the crossbar bolts and the crossbar. Pull off the transmission cover bolt and cover, drain off the engine oil and pull off the engine Oil Filter, then reinstall the Drain Plug and Oil Filter until it is tight. For vehicles with the 4l60-e auto transmission, remove the transmission bolt and stud at right-hand side and the bottom bolt at the left-hand side. Remove the transmission cover bolts for those with 4l80-e automatic transmission. Disconnect the oil level sensor electrical connector, the battery cable channel bolt, slide the channel pin out of Oil Pan tab, and remove the engine wiring harness clip and positive battery cable clip from the positive battery cable clip, remove the engine oil cooler lines and remove the positive battery cable clip bolt and clip. Drain the pan oil and remove the Oil Pan, being careful not to allow any foreign objects into the oil passages. If required , drill out the Oil Pan gasket retaining rivets and remove the gasket ditching the gasket and rivets. Clean and inspect the engine Oil Pan according to necessary. For installation, a 5 mm (0.20 inch) bead of sealant gm p/n 12378190 or equivalent should be fitted the engine block on the tabs of the front and rear cover gaskets that protrude onto the Oil Pan surface. Mount the oil gallery passages in the correct orientation with the Oil Pan gasket, assemble the pre-assembled gasket to the pan, and the latter, along with the bolts, to the engine block. Tighten the Oil Pan bolts without over-tightening, then you will install the transmission converter cover bolts and the transmission bolt and stud on the right until snug. Using factory-recommended sequence and torque values, tighten the bottom bolt on the left side, then the Oil Pan, Oil Pan-to-Oil Pan front cover bolts at 25 nm (18 ft. Lbs.), Oil Pan-to-Oil Pan front cover bolts at 12 nm (106 inch lbs.), bellhouse, converter cover, and transmission bolts/stud at 50 nm (37 ft. Lbs.). Install the positive battery cable clip, bolt to the Oil Pan, tighten bolt to 9 nm (80 inch lbs) then install the engine oil cooler lines and the engine wiring harness clip and positive battery cable clip to the positive battery cable clip. Insert the channel pin in the Oil Pan tab, install the battery cable channel bolt and tighten it to 12 nm (106 inch lbs). Finally, connect the oil level sensor electrical connector, mount the transmission cover and bolt and tighten the bolt to 12 nm (106 inch lbs) then mount the crossbar along with its bolts and tighten them to 100 nm (74 ft. Lbs). If installed, fit into position the Oil Pan skid plate with its bolts and tighten them to 20 nm (15 ft. Lbs.), followed by the transmission cover bolts, which should be set to 12 nm (106 inch lbs.). Lift the front drive axle into position, and for vehicles equipped with 4wd install the differential carrier upper mounting bolt and nut securely without tightening and then install the lower mounting bolt and nut and tighten to 100 nm (75 ft. Lbs.). Lastly, bolt the inner axle housing washers and nuts to the bracket, as well as tighten the nuts to 100 nm (75 ft. Lbs.), then take jack off front drive axle, and install new engine oil and new Oil Filter.