jkstyle834,
How many miles are on your car/engine? Was the head ever removed form the block? You describe a "whiny" sound, rubbing on something; then the dealer said that the chain could be "slapping". I ask the above because the if the head was serviced, was the slack slide guide/main guide (unsure what/how the FSM references the timing components) ever adjusted when serviced?
I agree with cl9kamina in regards to the power steering, might be worth to check it out. I commented in another thread about my alternator giving out in 20mins; it had a whiny/whirling sound rpm related to it.
Curious if you got this sound/noise resolved by yourself or from the dealer? I would consider all of your Preventative Maintenance items related to the alt, Power Steering, and the belt to narrow it down if you haven't. A timing chain is not as quick as the three I mentioned. Other may have some related thoughts to this.
/JJ