Impact gun will work...but it might just snap it off too. Try tightning the bolt just a bit and then loosen it...If its completely frozen, it will probably break off. Then you will have to drill it out and rethread it. but at least you will have the tank down....dont forget to tap the bolt with a punch and a hammer to break the rust before trying to take it off...just my advice. Good Luck!98whitez24 said:i see the hot, it's just not plugged in at the tank, thats my only issue, but i still havent done anything with the tank yet, it'll get done soon though, waiting on a decent sized paycheque so i can start picking up sheetmetal & rivit gun, rivits, some pb blaster, possibly an impact gun & see if i can't break that bolt loose, sheet metal & rivit gun is for the floor boards i have to deal with