Seller notes

Throttle Body 57RVFB56 for K3500 C2500 Suburban C3500 C3500HD Express 3500 K2500 Brand: AC Delco Throttle BodyCondition: New Check Your Application BelowProduct DescriptionNotes Fuel Injection Throttle Body -- New; CODE KNXFeatures:This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicleHelps provide air flow for proper fuel/air mixtureAllows for a quick throttle responseAssi...

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