Buy 2012 Chevrolet Silverado 3500 HD LTZ Extended Cab Pickup Fleetside 6.0L Vortec V8 FLEX A/T RWD - OEM Chevrolet Part # 15137021 (12569373)

Canister Assembly - EVaporator EMIS.
Bed Length 68.4. Bed Length 69.2". Vapor Canister.

Vapor Canister

5.9 & 6.5 ft box. DOUBLE & CREW CAB. Express, Savana; Commercial Cutaway. REGULAR CAB, 6.6 ft box. Sierra, Silverado; 119, 133.9 Wheelbase. Sierra, Silverado; 6 Ft. Box. Silverado, Sierra; Short Bed.
Fuel Evaporative Canister - Repair or Replace
A failed evaporative canister in your vehicle's evaporative emissions system, also known as a charcoal canister, will often have no noticeable symptoms beyond a check engine light, but it does cause your 2012 Chevrolet Silverado to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Chevrolet genuine parts.