Marc, you use a torque wrench to tighten the filter? Does the service manual have a torque spec? Typically the ACDelco box just says x turns past when the gasket touches, which is what I've always done. I'll have to check that out when I do the next change. I'd be afraid of distorting the filter wth a filter wrench.
Aurora40....I don't use the torque wrench to tighten the filter. I just use the rachet wrench with the cup wrench and tighten the filter until it feels snug, which is usually about 1 turn past handtight. There is a factory torque figure in the 2001 shop manual. On page 6-535, an amount of 24 ft. lbs. is stated, but I think that's too much.