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2000 2500 hd tag light8/2/2023 ![]() ![]() I have found it attached to the battery’s negative terminal and then to the truck frame in some models. Therefore, you need to use a high-quality wire connected to the truck chassis with a large gauge size. In addition, electric current to all systems and components like horn, radio, lights, and wipers passes through this wire to the truck frame. This wire bears the highest current due to the alternator and starter. The main ground wire is the battery’s negative terminal in the engine compartment. ![]() However, you have to remove the defroster to detect the 4-AWG wire connected with the Silverado frame with the help of a bolt or screw. You will find two ground wires on both left and right side A-pillars. There are multiple grounds inside the truck cabin for various electronic circuits connected with the body. Its corrosion or rusting will result in a fault indicator light with various trouble codes on the dashboard. It has the code name G103 and acts as the ground terminal for the main engine wiring harness. You will locate it on the front or rear of the right cylinder head/block in the engine compartment under the hood. Therefore, it should have a solid and low resistance ground connection to prevent its malfunctioning. PCM acts as the brain of a Chevy Silverado, receiving electronic signals from various sensors and truck systems. Locate its battery in the engine compartment, and you will find a negative battery terminal connected to the truck body with a black wire at some nearby point. Then, it attaches with the truck chassis to complete the circuit. The battery acts as the primary power source for some of the electrical systems of the Chevy Silverado.įirst, its negative terminal is attached to the ground to provide the return path for electrical current. But mostly, they remain the same across all model years. In addition, there can be a few additional points according to the engine and cab configurations. There are 10-15 ground points from various parts of the Chevy Silverado to the truck body.
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