OEM Chevrolet Avalanche 1500 Oil Pan

Chevrolet Avalanche 1500 Oil Pan Parts Questions & Experts Answers

• Oil Pan
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  Q: How to replace the oil pan on Chevrolet Avalanche 1500?

  A: First, if the car is equipped with four wheel drive (4WD) to remove the inner axle housing nuts as well as washers from the bracket and after that the system is supported by a proper jack. Afterwards, take off the differential carrier lower and upper mounting bolts and nuts, lower the front drive axle, and take off the transmission cover bolt. If necessary, remove the bolts from the Oil Pan skid plate and the skid plate itself, bolts in the crossbar, and the crossbar. Loose the transmission cover bolt and cover, drain the engine oil out, and remove the engine Oil Filter and then re-install the drain plug and Oil Filter until tight. In case of the 4l60-e automatic transmission, remove the transmission bolt and stud on the right hand side and the bottom bolt on the left hand side. For the owners of the 4l80-e automatic transmission, the converter cover bolts need to be removed. Take the break away electrical connection of oil level sensor and remove the battery cable channel bolt, pull out the channel pin from the Oil Pan tab, remove the cylinder engine wiring harness clip, positive battery cable clip and also the engine oil cooler lines from the positive battery cable clip then remove the positive battery cable clip bolt and clip. Do not lose the Oil Pan bolts and the pan while removing them as well as anything else should not enter the oil passages. If necessary, drill out the Oil Pan gasket retaining rivets and remove and discard the gasket and rivets. Clean and check the engine Oil Pan when necessary. For installation, a 5 mm (0.20 inch) bead of sealant, gm p/n 12378190 or equivalent, is installed into the engine block of the tabs on the front and rear cover gaskets that protrude into the Oil Pan surface. Position the oil gallery passages in the Oil Pan and the engine block correctly with regard to the new gasket, pre-assemble the new gasket to the pan, and fit the Oil Pan, gasket, and bolts to the engine block. Tighten the Oil Pan bolts until snug without over-tightening followed by the installation of the transmission converter cover bolts to snug, for the 4l80-e automatic transmission and the transmission bolt and stud on the right side, for the 4l60-e automatic transmission. Set the bottom bolt on left side and tighten it until tight, then the Oil Pan and Oil Pan-to-Oil Pan front cover to 25 nm (18 ft. Lbs.), Oil Pan-to- rear cover to 12 nm (106 inch lbs.), and bell housing, converter cover, and transmission bolts/stud-to 50 nm (37 ft. Lbs.). Mount the positive battery cable clip to the Oil Pan and bolt to 9 nm (80 inces lbs.) and plug in the engine oil cooler lines to the positive battery cable clip, then mount to the end the engine wiring harness clip followed by the positive battery cable clip. Nestle the chranel pin into the Oil Pan tab, screw the battery cable chranel bolt, and tighten it to 12 nm (106 inch lbs.). Connect the oil level sensor electrical connector , install the transmission cover and bolt then tighten the bolt to 12 nm (106 inch lbs.) , install crossbar and the bolts then tighten the bolts 100 nm (74 ft. Lbs.). If available, attach the Oil Pan skid plate with its bolts, tightened to the value of 20 nm (15 ft. Lbs.), and then the transmission cover bolts, which should be tightened to 12 nm (106 inch lbs). Lift up the front drive axle into its place, tighten differential carrier upper mounting bolt and nut until it is hand-tightened, then differential carrier lower mounting bolt and nut to 100 nm (75 ft. Lbs.). Lastly, bolt the inner axle washers and nuts onto the bracket and tighten to 100 nm (75 ft. Lbs) and remove the jack by the front drive axle and have the engine oil replaced and the Oil Filter, new.