2021 GMC Savana 3500 Service and Repair Manual
This factory service and repair manual for the 2021 GMC Savana 3500 covers a 6.6L naturally aspirated gasoline V8 of 401 cubic inches at the top of the engine list, a 4.3L overhead-valve V6 on flex fuel or gasoline below it, and a 2.8L twin-cam turbocharged diesel inline-four at the small end. Seven bodies are covered, among them a four-door extended cargo van and the two-door cutaway, and the trims are Base, LS and LT. Engine specifications are kept apart so the right figures go with the right block.
Engines covered
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, flex-fuel or gasoline
- 6.6L V8 (401 cu in) — OHV, naturally aspirated, gasoline
- 2.8L inline-four (171 cu in) — DOHC, turbocharged, diesel
Body styles covered
- 3-door extended cargo van
- 3-door standard cargo van
- 4-door standard passenger van
- 3-door extended passenger van
- 3-door standard passenger van
- 4-door extended cargo van
- 2-door cutaway van
Trims covered
- Base
- LS
- LT
Known issues on the 2021 Savana 3500. Two owner complaints are logged with NHTSA for this model year, both on the steering. Steering work on a van of this weight comes down to specifications and torque: linkage fasteners, gear mounting, and the hydraulic connections that feed assist. The manual gives those figures, the diagnostic sequence for tracking a steering symptom back to its source, and the wiring diagrams for anything electrically driven in the same area. Its engine, chassis and body sections treat the rest of the vehicle the same way.
