Vehicle Compatibility Information For Cadillac ELR 2014-2016 L4 1.4L DOHC Petrol For Chevrolet Volt 2011-2015 L4 1.4L DOHC Petrol What is a throttle body ? The throttle body is the part of the engine that mixes air with the fuel to allow combustion to take place. When a throttle body gets clogged with carbon, the vehicle may suffer from issues ranging from a lack of fuel mileage, loss in efficiency or may even become totally inoperable. When you need to replace the throttle body: .
