To ensure reliability, purchase GM part # 12111821 HARNESS, Chassis Wiring. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet K1500, K2500, K3500 models. It fits GMC K1500, K2500, K3500.
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