Detroit Diesel GM 71 Series Engine 1-71 2-71 3-71. Service & Maintenance Manual. Manual is in good used condition. The item “Detroit Diesel GM 71 Series Engine 1-71 2-71 3-71 Service & Maintenance Manual” is in sale since Tuesday, April 18, 2017. This item is in the category “Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy […]