Hello all, I am having an issue and need help identifying what it may be. Trying not to drop a buttload of cash just yet especially if I can fix it. I was driving down the interstate today and noticed thet mu Hummer was smoking. I stopped to check it out and saw fluid leaking around my rear differential. I was wondering if anyone else had this problem and could let me know what it was with their H2. Mine is an 07 with about 70,000 miles. The fluid was not pin like it should be but had the consistincy of tranny fluid. Thoughts?