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Re: Question about a 2002 Chevy Impala base model
Hi. I have a 2000 that I put a number of aftermarket stereo parts in it. A 2003 shouldn't be much different. I installed without the factory head unit "teed" off the harness, and added it later for service resets, etc. Anyway, you may have a booster amp under the rear shelf. If so, and if he just hooked into the harness connector that plugged into the factory stereo, he's trying to play through that booster. He needs to run speaker wires directly to each speaker(not to the factory stereo connector), or find the schematic for the plug on the booster, and jump the pertinent contacts. If no booster, let us know, but if he's done this before, he may have just overlooked this, as it doesn't add much to the factory unit's power and they hide it....
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