gallotte Posted September 25, 2008 Report Share Posted September 25, 2008 I've always put premium fuel in my 00 seville sls. I left for a business trip this morning and filled up with mid grade. About 2 hours into my journey the car started acting funny on cruise control. It seemed to hesitate and miss, like it suddenly lost power for a split second. It only did this when the speed was stable. If the car was speeding up, there was no miss at all. Does anyone know if the gas might be to blame for this? All help is appreciated. Thanks. Link to comment Share on other sites More sharing options...
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