Monday, May 12, 2014
How to Disconnect and Fix a Duramax Battery
The Duramax diesel engine is fitted in heavy duty trucks made by General Motors. The battery can be the cause of problems within the engine for a variety of reasons, and while the battery sometimes has to be replaced, you may be able to top up the battery fluid and get it working again. The battery itself is not particularly complicated, but it does contain some toxic chemicals so often it is better to purchase a replacement than attempt a repair yourself.
Instructions
- 1
Park your diesel truck on level ground and open the hood. Locate the battery. In some models it is hidden under a plastic cover. Remove the plastic cover by undoing the clips. You may need to use the screwdriver to pry open the clips.
2Disconnect the black, negative terminal from the battery by loosening the nut on the clamp and pulling the clamp up and off the battery terminal. Disconnect the red positive terminal by loosening the nut holding the clamp in place and lifting the wire off the terminal.
3Remove the clamp or bar holding the battery in place by loosening both nuts. Grasp the battery with both hands, remove it from the vehicle and set it on a work bench or similar.
4On top of the battery are two rectangular covers. Pry these up with the flathead screwdriver and set them aside. They are very tight and they have acid underneath so be very caul the acid does not splash on you or anything around you. Some batteries may not have the cover in place. These are not fixable and have to be replaced.
5Pour distilled water into the battery until the acid and water completely covers the terminals. Replace the covers on top of the battery by pushing down firmly. Replace the battery in the vehicle.
6Replace the clamp or bar over the top of the battery and tighten the nuts to hold it in place. Replace the clamp over the positive (red) terminal and tighten the nut to hold it in place. Do the same with the negative (black) terminal
7Replace the plastic cover over the battery, close the hood and start the truck to make sure the battery works. If the battery was dead before you started then you may need to jump start the truck.
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