Need support. Just found out my radiator is leaking

[Doubeleive]

Have you checked drain petcock to make sure its tight and if is check Oring on petcock.

they deleted the drain on the gmt900's, unless you install a older model compatible radiator there isn't one.

 

[Rocket Man]

The new replacement OEM GMT 800 radiators don’t have petcocks either, they eliminated them also. I replaced the one in my 02 Yukon Denali a couple years ago and it came without one. My old one had it.

 

[iboughtatahoe23]

My stock 07 Denali does NOT have a petcock.
I pull my lower radiator hose off to drain it.
Your results may vary?

Youd think seven years later they would implement something like that.... than again half a million in savings haha across all gmt 900 made

 

[iboughtatahoe23]

The new replacement OEM GMT 800 radiators don’t have petcocks either, they eliminated them also. I replaced the one in my 02 Yukon Denali a couple years ago and it came without one. My old one had it.

i like your rides by the way