C 1500 Truck 2WD V6-4.3L VIN W (2001)
Important: The oil pan alignment must always be flush or forward no more than 0.3 mm (0.011 inch) from the rear face of the engine block.
4. Install the oil pan onto the engine block. Press the oil pan gasket into the grooves of the engine front cover and crankshaft rear oil seal housing.
5. Slide the oil pan back against a suitable straight edge.
Notice: Refer to Fastener Notice in Service Precautions.
6. Install the oil pan bolts and nuts, but,do not tighten.
7. Measure the pan-to-transmission housing clearance using a feeler gauge and a straight edge.
Use a feeler gauge to check the clearance between the oil pan-to-transmission housing measurement points. If the clearance exceeds 0.3 mm
(0.011 inch) at any of the 3 oil pan-to-transmission housing measurement points (1), then repeat the step until the oil pan-to-transmission housing
clearance is within the specification. The oil pan must always be forward of the rear face of the engine block.