GM1500 TRUCK ONBOARD AIR AND TRAIN HORN SYSTEM NOW SHIPPING! Kleinn Air Horns has released a new Vehicle Specific Onboard Air and Train Horn System for the GMC Sierra and Chevrolet Silverado 1500 trucks. Like all Kleinn direct fit systems, the kit is a vehicle specific 100% bolt-on installation. No Drilling, Cutting or Welding required. …
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