2005 Chevy Silverado Truck Performance - Couch-Potato Power
1.To make sure we had no issues with retuning our ECM, we set the parking brake to turn the headlights off when the ignition was off. We also closed the doors and didn't touch any buttons on the truck, unless we were told to by the Superchips programmer. This would ensure that nothing would drain voltage from the battery and the programmer received plenty of power. View Related Article
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