Chevrolet Silverado / GMC Sierra. Manual - part 87
Use the feeler gage to check the clearance at the oil pan-to-transmission housing
measurement points (1). If the clearance exceeds 0.3 mm (0.011 in) at any of the oil pan-to-
transmission housing measurement points (1), then repeat the step until the oil pan-to-
transmission housing clearance is within specifications. The oil pan must always be forward
of the rear face of the engine block.
Fig. 275: Oil Pan Bolts & Nuts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
8. Tighten the oil pan bolts and nuts in the sequence shown.
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Tighten: Tighten the bolts to 25 N.m (18 lb ft).
9. Measure the clearance at the oil pan-to-transmission housing measurement points in order to
ensure proper alignment.
Fig. 276: Identifying Oil Drain Plug
Courtesy of GENERAL MOTORS CORP.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
10. Install a NEW drain plug O-ring seal onto the drain plug.
11. Install the drain plug.
Tighten: Tighten the plug to 25 N.m (18 lb ft).
Fig. 277: Manual Transmission Bolts
Courtesy of GENERAL MOTORS CORP.
12. Install the transmission cover.
Tighten: Tighten the bolts to 12 N.m (106 lb in).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
