1999 Nbs 4.8 Intake Gasket?

[volfan]

I HAVE A 1999 4.8 NBS AND I KEEP SEEING FLUID JUST BEHIND THE WATER PUMP ON TOP,LOOKS LIKE OIL BUT I HAVE NOTICED THE COOLANT IN THE COOLANT TANK HAS DROPPED A LITTLE BUT I HAVE NOT ADDED ANY,JUST HAD THE WATER PUMP CHANGED BACK INT THE SPRING OF 2008,TRUCK HAS ABOUT 108K ON IT NOW,ANY IDEAS??THANKS

[98 Z71 SLT]

You have a DRY intake manifold...no coolant passes thru it.

 

One of two things leaking...either your throttle body hoses are weak, and allowing coolant to escape; or crossover steam tube, that runs from cylinder head to cylinder head, is leaking.

[volfan]

ARE THESE EASY FIXES,EXPENSIVE OR NOT? THANK YOU

[Zembonez]

Depending on your mechanical skills, they are relatively easy fixes and not too expensive. Those engines are prone to having water pump gasket leaks at times too, so I would check very well to confirm the source of the leak.... before you "fix" something that isn't the problem.

 

Please turn off the cap lock when posting in here.

[volfan]

Should i fix it or just drive it??thanks for your help

[Zembonez]

I'd probably fix it just in case it is about to turn into a bad leak and really cause a problem... but I guess that depends on what it is and how much it leaks. Since you had the water pump replaced already, I'd at least keep a really close eye on it and make sure the reservoir stays full.