Hi there, I, for a number of years, use ACDelco batteries. Lately my GMC ACDelco battery became dysfunctional and I noticed a spill and some smoke at one side so I got concerned with regard to safety and took the car to a nearby car care shop were the battery was replaced with another ACDelco . I was asked to pay for the new battery despite the old one was still under the first year warranty, and this I was told because the stamp on the warranty belonged to a different place ! I did pay in full but I was not happy with what happened and I have decided to bring it to your attention to see how best this issue may be resolved. Regards M AlGari