I just submitted a question about leaking antifreeze. Maybe this will make it ea on 2005 Chevrolet Silverado 1500

sier for you to answer--"I smell antifreeze when I start the engine."

by in Houston, TX on June 15, 2013
1 answer 9 comments
ANSWER by on June 15, 2013
Replace the water pump. I can see it leaking from here!
COMMENT by on June 16, 2013
the water pump will cause me to lose antifreeze?
COMMENT by on June 16, 2013
Yep, when it leaks it will, every time!!! Check radiator also. Look very close, hard to find at times..even under pressure test!!
COMMENT by on June 20, 2013
Like pushrod said, we can see the water pump leaking from here! GM 5.3L = Water Pump leak!
COMMENT by on June 20, 2013
Bypassed the Heater Core. No more leak.
COMMENT by on June 20, 2013
Ok. No more heat either but you wont need that for awhile!
COMMENT by on June 20, 2013
Nope not in Houston, TX! 104 yesterday.
COMMENT by on June 20, 2013
Crap! Ac ok? These 5.3 engines are just famous for mystery H20 leaks and most of the time it's the pump or rad. A little unusual for the core to leak. When you get it fixed use good old fashion antifreeze, not Dexcool.
COMMENT by on June 20, 2013
A\C blows artic cold. I was told I had to use Dexcool and not to change it. What's up with that?
COMMENT by on June 20, 2013
That is just a bunch of B.S.!! After working on these GM vehicles and seeing the effect of Dexcool, first thing i did, after warranty, on my Blazer is flush that crap out and replace it with the old green stuff. Google Dexcool, look around a bit and you will see, i think. Probably the reason your heater core is leaking!