I am very disappointed with GM products, and customer service:
Few months ago I bought 2 minimotor kits by internet. First one was burnt in 2 days as reported to the forum (September 30, 2009)). The second one, with careful use and electrical protection, also failed after few weeks.
Mr. Yao Yuan, by email, has insisted me to be patient and not to worry, as the minimotors were being redesigned to solve the known problem, and I will get my replacements in due time.
When Yao reported that the units were improved a lot, I sent my shipping address for the replacements and that was the end of the story - GM do not reply to my messages anymore (4 so far).
If you know about any similar experience, I would appreciate any advice.