Hello. I am still having problems with my 1984 GMC Jimmy. I am starting a new thread because the old one is too long. http://coloradok5.com/forums/showthread.php?t=164388 When I go to start the truck with a "fullly" (battery charger says it has a full charge) it doesn't crank it just kills the battery. This would make you assume there is a short somewhere. Where do I start looking to track it down? The battery I am using is brand new and has only been used to attempt to start this heep. This week I will buy new spark plugs as the old ones are quite dirty and black. I haven't been able to take my gas tank out yet, all the ^@%#%ing bolts are rusted and seized so it's frustrating trying to get them loose. As mentioned in my previous thread the inside of the tank must be dirty and thats why it ran BAD when it did start. Can anyone help. I really need to get this truck running again. Thanks.