This factory service and repair manual for the 2020 GMC Savana 4500 addresses a chassis sold to be finished by somebody else, a two-door cutaway in Base trim with nothing else on the list. Its single engine is the 6.0L naturally aspirated overhead-valve V8 of 364 cubic inches, offered for gasoline, compressed natural gas or flex fuel. Because the base vehicle is what GMC documented and the body on the back is not, this book is where a fleet shop finds the original figures.
Engines covered
- 6.0L V8 (364 cu in) — OHV, naturally aspirated, gasoline or CNG or flex-fuel
Body styles covered
- 2-door cutaway
Trims covered
- Base
Known issues on the 2020 Savana 4500. No recall has been issued against this model year and no owner complaint is logged with NHTSA. That makes the manual a working tool rather than a corrective one. It sets out the 6.0L V8's procedures and specifications across its gasoline, compressed natural gas and flex-fuel forms, the torque values that go with those procedures, wiring diagrams for the base-vehicle circuits, and diagnostic sequences that start from what the truck is actually doing wrong.
