There's a weep hole on waterpump, probably leaking from there.

 

Why can't you drive it with a leak??? Good grief, first world problems. Just carry some coolant with you and keep an eye on it. I drove around a year and a half before I solved a coolant leak (bypass hose tube).

 

 

Get under the truck (with a mirror if need be) after you had it up to temperature and shut it off. This is when the pressure goes up a bit and the leak will show itself.
This would be the first place to look!

 

 

the timing chain cover gasket is another source of leaks. I had to change mine.

 

If you lay on the ground and look up at the water pump, you should see the weep hole behind the water pump pulley. You can also use an inspection mirror and try to look at it from the top of the motor. Also check the bypass hose between the water pump and the intake in addition to the heater hose bypass tube on the side of the water pump. Lastly, check around the thermostat housing where the upper radiator hose comes off the intake. As was mentioned, the timing cover gasket/bolts can be a source for coolant leaks, too.

 

Same things to check others have said, I need to change my pump out most likely finally, with that and tightening up my steering box my truck should be set for many years, I have to add a bit of coolant every 100ish miles, which for my low yearly mileage usage really hasn't been an issue

What are the odds it's just a gasket though? I've heard horror stories of even new pumps being crap quality and leaking online but who knows if the people installed them right....many online preached about putting in a new clutch fan too since people swore that could improve mpg...?

When discussing going ahead and putting in a new timing chain while already that deep in there, one user said they did and it did no improvement and there's always going to be a little play in the chain according to them. I'm wary of screwing with a well running vehicle which after a tune-up and new fuel pump mine runs perfectly like a top now...

I can't find any info or step by step pics showing how to do the timing chain/gears on these trucks either....some say it HAS to be at top dead center, others said wherever the marks are on the old ones are just replace those with new, others said move the old ones by hand until the dots line up right down the middle THEN change it all out....urgh lol.

Apparently either the upper left or upper right timing chain cover spot is an area that can wear/leak over time I vaguely remember reading so extra gasket material is needed there(could be any of the corners honestly, it's been awhile)