Holley Performance

{ "variantCount": 1, "variants": [{ "id": "43246637613149", "title": "Default Title", "fitmentClass": "vehicle_specific", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": null }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": null }, { "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": null }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": null } ] } ] }

{ "variantCount": 1, "variants": [{ "id": "43246632697949", "title": "Default Title", "fitmentClass": "vehicle_specific", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2017","2018","2019"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." } ] } ] }

{ "variantCount": 1, "variants": [{ "id": "43246632632413", "title": "Default Title", "fitmentClass": "vehicle_specific", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2020","2021","2022","2023"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2020","2021","2022","2023"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2020","2021","2022","2023"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax L5P", "years": ["2020","2021","2022","2023"], "body": "Pickup", "notes": "Changing axle ratio can disable factory cruise control; this module does not restore that function." } ] } ] }

{ "variantCount": 1, "variants": [{ "id": "43246632599645", "title": "Default Title", "fitmentClass": "vehicle_specific", "applicationCount": 3, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 4500", "engine": "6.6L", "type": "Duramax L5D", "years": ["2019","2020","2021","2022","2023"], "body": "Cab \u0026 Chassis", "notes": "L5D medium-duty Cab \u0026 Chassis only; factory cruise control required. Top-speed limiter adjustment is unavailable." }, { "verified": true, "make": "GM", "model": "Silverado 5500", "engine": "6.6L", "type": "Duramax L5D", "years": ["2019","2020","2021","2022","2023"], "body": "Cab \u0026 Chassis", "notes": "L5D medium-duty Cab \u0026 Chassis only; factory cruise control required. Top-speed limiter adjustment is unavailable." }, { "verified": true, "make": "GM", "model": "Silverado 6500", "engine": "6.6L", "type": "Duramax L5D", "years": ["2019","2020","2021","2022","2023"], "body": "Cab \u0026 Chassis", "notes": "L5D medium-duty Cab \u0026 Chassis only; factory cruise control required. Top-speed limiter adjustment is unavailable." } ] } ] }