Part Description: 2018 Chevrolet Silverado 2500 HD ECM Relay
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Vehicle Fitment
2018 Chevrolet Silverado 2500 HD | Base, High Country, LS, LT, LTZ, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS