This factory service and repair manual for the 2015 GMC Savana 4500 covers 403 cubic inches of turbocharged diesel V8 and 364 cubic inches of naturally aspirated V8 that can be built for compressed natural gas or flex fuel. Both are overhead-valve engines and both sit in the same vehicle, since the 4500 is listed only as a two-door cutaway in Base trim. That narrow spread of variants is what lets the coverage go deep on each one.
Engines covered
- 6.6L V8 (403 cu in) — OHV, turbocharged, diesel
- 6.0L V8 (364 cu in) — OHV, naturally aspirated, CNG or flex-fuel
Body styles covered
- 2-door cutaway
Trims covered
- Base
Known issues on the 2015 Savana 4500. Neither recalls nor owner complaints attach to this model year in the federal record. With nothing outstanding to correct, the manual works as a straight repair reference, giving procedures and specifications for the turbocharged 6.6L diesel and the compressed natural gas or flex-fuel 6.0L, torque values throughout, base-vehicle wiring diagrams, and diagnostic routines. For a cutaway chassis that may have been on the road for years under a heavy body, those are the numbers that keep repairs to specification.
TRANSMISSION SHIFTS HARD AND BETWEEN 35 TO 45 MPH HAS A ROUGH VIBRATION. PULLING INTO A PARKING SPOT OR DRIVEWAY THE BRAKES WILL SOMETIMES FEEL DIFFERENT AND THE PEDAL WILL SHAKE.
TRANSMISSION SHIFTS HARD AND BETWEEN 35 TO 45 MPH HAS A ROUGH VIBRATION. PULLING INTO A PARKING SPOT OR DRIVEWAY THE BRAKES WILL SOMETIMES FEEL DIFFERENT AND THE PEDAL WILL SHAKE.
