OEM 2008 Chevrolet Express 3500 Oil Pan

2008 Chevrolet Express 3500 Oil Pan Parts Questions & Experts Answers

• Q: How to replace the oil pan on 2008 Chevrolet Express 3500?

  A: In order to replace the Oil Pan, first, if it has all-wheel drive (AWD), remove the inner axle housing nuts and washers from the bracket and then provide front drive axle support using a suitable jack. Then, take out the differential carrier lower and upper bolts and nuts, lower the front drive axle, and remove the transmission cover bolt, crossbar bolts and crossbar. And after that take off the transmission cover bolt and cover, drain the oil from the engine, take off the engines Oil Filter and then replace the bot putting it back in till it's tight. For cars fitted with 4l60-e automatic transmission, one would remove the transmission bolt as well as the stud on the right side and the bottom bolt on the left side of the car; those who have the 4l80-e automatic we will remove the bolts on the transmission converter cover. Unplug the oil level sensor electric connector, remove the screw that fasten the battery cable channel, slide the channel pin out from the Oil Pan tab, and remove the positive battery cable clip screw. Make the steps to remove the Oil Pan bolts and the Oil Pan itself, while not allowing any foreign material to get into the oil passages. If necessary, drill out on to the Oil Pan Gasket retaining rivets and take off the gasket, discarding the gasket and rivets. The engine Oil Pan must also be cleaned and inspected whenever is required. For installation, use a 5 mm (0.20 in) long bead of sealant (20 mm, 0.80 in) along the engine block and applied directly on the tabs of the front and rear cover gaskets that extend into the Oil Pan surface. Soft assemble the Oil Pan Gasket with the pan and place the Oil Pan, gasket, and bolts on the engine block and tighten the Oil Pan bolts just enough to keep it in place and not too tight. If the distro is to be installed with the 4l80-e automatic, just get those transmission converter cover bolts installed up to snug; for the 4l60-e automatic transmission, install the transmission bolt and stud on the right side then tight the bottom bolt on the left side. Tighten Oil Pan-to-front cover bolts to 25 n.m (18 lb ft), Oil Pan-to-rear cover bolts to 12 n.m (106 lb in), and converter cover and transmission bolts/stud to 50 n.m (37 lb ft). Put in the positive batterry cable clip bolt and tighten it to 9 n.m (80 lb in) and slide the channel pin in the Oil Pan tab and put in the battery cable channel bolt and tight it to 12 n.m (106 lb in). Mate the oil level sensor electrical connector, fit the transmission cover and bolt by tightening it to 12 n.m (106 lb in), then mate the crossbar and bolts by tightening them to 100 n.m (74 lb ft). Finally install the transmission cover bolt after lifting the front drive axle in position then if you have an awd install the differential carrier upper mounting bolt and nut tighten loosely, install the lower mounting bolt and nut tighten nut to 100 n.m (75 lb ft) then install the inner axle housing washers and nuts to the bracket tighten to 100 n.m ( 75 lb ft). Unscrew the front drive axle jack and put new engine oil and new Oil Filter.