Battery Replacement: 2003 GMC Sierra Denali 6.0L V8

GMC Sierra Denali Model Years - 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

1. Getting Started - Prepare for the repair

2. Open the Hood - How to pop the hood and prop it open

3. Access Battery - Learn where the battery is located

4. Remove Bracket - Take off the bracket that secures the battery

5. Remove Cables - How to disconnect the cables the right way

6. Clean Cables - Clean with baking soda, water and a wire brush

7. New Battery - Install new battery and prevent corrosion

8. Secure Battery - Replace the bracket to secure the new battery

9. More Info. - Additional thoughts on replacing the battery

Author

Hans Angermeier is an ASE certified Maintenance and Light Repair Technician and has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road. Over the past 10 years, Hans has been focused on building CarCareKiosk, which is visited by millions of drivers each month.

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Video Description

Where is the battery located in a GMC Sierra Denali?

The video above shows you how to replace the battery in your 2003 GMC Sierra Denali. We recommend changing the battery in GMCs every 4 years. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your Sierra Denali that you need to replace.

The battery location in a GMC Sierra Denali can typically be found in the engine bay, but may be in the trunk, fender or inside of the vehicle. You may need to remove the air filter housing, a plastic engine cover or parts of the cowl to find the battery in your Sierra Denali. See exactly where the battery is located in your 2003 GMC Sierra Denali.

Replacing the battery in your Sierra Denali involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some Sierra Denalis, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual - it will usually be either a sticker or small card in the booklet. If you can't find it, call GMC and they will give you the code for free. In many GMCs, the transmission "learns" how you drive over time and makes adjustments, so you may experience altered driving dynamics as your car re-learns your driving style after changing the battery.

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