9th Jun 2011, 20:19

Thanks for the advice. I have a 2002 GMC Yukon Denali XL that started leaking water into the cargo area. I read this post and found the plug. I used the dull end of a wooden kabob to poke up in the plug, and it released a lot of water for about 30 seconds. I think this fixed the problem.

19th Aug 2014, 21:15

Wow - you are the "king" of the world with this solution.

My 2002 Yukon XL Denali has been wet in the back rear area every summer for the last four years and my trusted mechanic couldn't fix it - but you could!!!

Many thanks - Stuart Herder, Alexandria, Virginia.