Questions and Answers

GMC Sierra Engine Torque Specs Q. My question is about the torque specs on the engine main bearing caps. I can't seem to find them and the dealer gave me some but I broke two bolts trying their torques so I don't trust them. Also the connecting rod caps what are the torques? 2004 GMC Sierra 4.8 liter V-8 Manual transmission 1,400 miles Fuel Injection ABS P/S, A/C, cruise control

A. Here are the specs you need.

Connecting Rod Bearing

Connecting Rod Bolts-Early Design (First Pass)	20 Nm (15 ft. lbs.)
Connecting Rod Bolts-Early Design (Final Pass)	60°
Connecting Rod Bolts-Later Design (First Pass)	20 Nm (15 ft. lbs.)
Connecting Rod Bolts-Later Design (Final Pass)	75°

Crankshaft Main Bearing

Crankshaft Bearing Cap Bolts (Inner Bolts-First Pass in Sequence)	20 Nm (15 ft. lbs.)
Crankshaft Bearing Cap Bolts (Inner Bolts-Final Pass in Sequence)	80°
Crankshaft Bearing Cap Bolts (Outer Bolts-First Pass in Sequence)	20 Nm (15 ft. lbs.)
Crankshaft Bearing Cap Bolts (Outer Bolts-Final Pass in Sequence)	51°
Crankshaft Bearing Cap Side Bolts	25 Nm (18 ft. lbs.)
Crankshaft Oil Deflector Nuts	25 Nm (18 ft. lbs.)

What happened? Did an oil change and forgot to fill it when you were done?