Change oil pan on a 2001 sonoma
the 2.2 engine and the 4.3 engine with 2WD MODEL you have to remove engine.the 4WD MODELS, you have to remove all these parts first remove dip stick, drive belt, splash shield, remove front axle shield and the transfer case shield, front skid plate and the flywheel cover,remove left and right engine mount through bolts.then raise the engine using a lifting device, and block in position,using large wooden blocks between the motor mounts and brackets.you will also need to remove these parts,remove disconnect oil cooler line, remove pitman aem bolt and pitman arm, remove idler arm bolts and idler arm, remove front differential through bolts,remove front driveshaft if necessary,remove differential assembly by rolling it forward for clearance, remove starter motor, then remove oil pan bolts then remove oil pan, your oil pan need to be flushed slightly forward of rear of the block to allow proper alignment with the transmission housing.using feeler gauge measure the 3 oil pan to transmission contact points.clearance should not exceed 0.011 in. 0.3mm if so realign the oil pan.oil pan bolts torque is 18 ft lbs tighten oil pan bolts in sequence.
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