Hello everybody, I have a 03 H2, I just got it a few months ago and now its time to change the oil. All my tools are in storage and i need to buy a socket to change my oil, What size is the drain plug? Thanks for the help. Kyle

 

I think it is 15mm as most GM's are. If not 15mm then 13mm but I bet it's 15mm

 

Do yourself a favor and buy the complete set in 1/2" drive. The price will not be much different and the whole set can be found for as little as $4 with lifetime warranty:

http://www.harborfreight.com/11-pc-1...-set-7409.html

 

So its MM. Thanks, I will buy a set. Kyle