Engine on the passenger side makes load clicking sound until it warms up, after it warms up it goes away. It appears to be related to heat expansion. What is that sound or cause?

If the issue goes away when the car is hot, then it's likely not a sensor issue. Check the brake caliper for free moving and check the caliper's pistons to make sure they aren't seized.
Check the condition of the brake disk and pads.

i see that once in a while when a cheap oil filter is used and the oil bleeds down

how well does reverse work and check color and level of trans fluid with engine running and warm also feel for grittyness of fluid if gritty and browning your trans may be going out

Some ticking noise is normal especially with older engines that use hydraulic lifters. The valve lash may need to be checked and you could replace the lifters but as you can tell since it only happens when it is cold, the expansion due to heat is enough to close the gap causing the noise. Therefore it is a very close tolerance and probably not worth the time to work on.

To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------
Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

-----------

No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------
Heater blows intermittently and temp gauge goes erratic? http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html------------Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
---------Car heater blowing warm, but not hot air? http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html-------- Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

------------
A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem? http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html---------

This will help.Thanks.

If it just does it when cold it's piston slap. GM made the skirts shorter to save weight and metal so until they warm up and expand in the walls your piston sill "rattle around" in the sleeve of the block making a "ticking" sound. This is normal but annoying.
If it continues when warm it could be a number of things too numerous to mention.
Try adding Lucas to your engine oil on the next service and see if it goes away.
Switching to a higher grade fuel may also solve your issue. Both cheap fixes.

thats usually the fan clutch if it goes away when the engine warms up

clunking noise front when turning left and does it right also but not as bad 2006 g6 at low speed and goes away as you speed up but always there i have replaced lower control arms both side still there

difficult one this without haveing a drive in car to hear the noise,this sort of sound could be caused by the flex plate on the crank/torque converter,break on edge of fan belt,power steering pump,altenator bearing,evan the transmission possibly a pump,or could it sound more a sort of electro mechanical noise ?? without hearing it its very difficult to diagnose .

hi try taking the air filter pipe off the throttle body see if the butterfly spindle has no play in the spindle or the retaining screws that hold it to the spindle have not come loose just put your finger on the butterfly while its idling see if the noise goes if not just pinch the vacuum hose on the vacuum box see if noise goes or changes pitch yates210456