put clock oil on the second hand.
from which part of your engine is the ticking noise coming from. if is the TOP it would most likely be lifter noise.try using a thicker oil.
The ticking sound is coming from the valve lifters. When the oil filter is changed, air is introduced into the system, which causes air bubbles to form in the oil. This causes the valve lifters to "leak down", which is what causes the ticking sound. It can take several days for the bubbles to dissipate. It's annoying, but harmless.
If they are mechanical lifters, then there is an adjustment under the valve cover. If they are hydraulic then there is no adjustment, and while a different weight motor oil or special additive may help the ticking there is not real way to stop it.
Try using sea foam engine cleaner before engine oil change and change oil to mobil 1 0W30 oil. The problem should go away with 0w30 oil due to it high detergent value, this should clean out the valve/lifter ports which may be plugged up. this is a common problem with the Honda 3.2L engine due to tight mfg. specs and small oil passages at the lifters. I had the ticking noise on my 1994 Honda passport and switching to mobil 0w30 oil took care of the problem. Continue with 3-4K oil changes.
Take it to a mechanic
Probably needs oil change with the correct oil specified by GMC, usually 5W30 this will usually clear the problem up.
"Engine temp is low 140 degrees" Bad Thermostat (stuck open) "a ticking noise is coming from the upper part of the engine" Lifters Make a ticking noise, To stop that there are these bags that fill with oil. If you run low on oil the bags don't inflate at you get a clicking. Check you oil level!!! The bags could be bad, the oil supply could be clogged, or something else could be wrong.
put in a thicker oil if its the motor but if its trans. change oil and change the seal on the peace that you remove to take the oil out.
That depends on what is ticking, and why. Generally, a minor engine tick that suddenly goes away was caused by a clog in the oil pathways inside the engine that cleared up suddenly. If the engine generally ticks until the engine is warmed up, this suggests a clog in the engine's internal oil pathways that stays there, but as the oil warms and thins it's able to squeeze through enough to stop the engine from ticking.
Low oil pressure. Stop driving this car or you will do serious damage. Your oil pump may be bad. Have this looked at by a pro.
Put more oil in if its not full already, other wise it will tick until the oil has fully gone through the system. Does it tick during idle or all the time? Other wise why are you just bothered about the idle time ticking? Especially if its only for a few mins.