05 is leaking what seems like trans/break or power steering fluid. After taking it to the shop for a rattle in the steering column.
fluid leaking on 2005 GMC Yukon Denali
Same thing found on my 04. Brought it in to get the intermediate steering shaft replaced and mechanic found fluid but couldn't pin point where it was coming from. I had them put dye in and drove it about 200 miles to still have nothing show up with the light. Long story short, ended up being the front differential leaking and since I drove alot of highway miles it was blowing all over.