I own a repair shop in Colorado, and needed an ABS module to fix a customer's truck. After a lot of on-line searching and phone calling, I was pleased to find a used part at Gurtz that matched the part number on my module. I bought it and had them ship it to me -- total cost of $100. When I received the part and installed it, it was no good -- same default code as the original one. I called Gurtz to ask if I could return it and they told me they don't warranty electrical parts -- and therefore wouldn't give me any of my money back. They did not tell me this when I purchased it. I mentioned that to the woman I spoke with at Gurtz, and she said they have a sign up in their lobby that states their policy clearly. When I reminded her that I purchased the part over the phone and was not told of that policy, she said -- basically -- 'tough'. When I asked to speak with the owner, she said he was unavailable and difficult to reach. I won't do business with these guys again.