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Cylinder head bolt torque sequence-3.4L engine
Install or connect the following:
New cylinder head gasket which is marked which side is UP
Cylinder head by aligning it with the dowel pins
New cylinder head bolts coated with a sealant (such as GM(NNN) NNN-NNNN. Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm) for 2001-03; 44 ft. lbs. (60 Nm) for 2004-05. Using a torque angle meter turn the bolts 90 degrees for 2001-03; 95 degrees for 2004-05, in the proper sequence