For the 2002 Pontiac Grand Am with a 3.4L engine, the intake manifold bolts should typically be torqued to about 11-15 ft-lbs (15-20 Nm). It's important to follow the proper torque sequence and specifications provided in the service manual for best results. Always ensure that the bolts are tightened in a gradual and even manner to prevent warping or damage to the intake manifold.
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