2012 Chevrolet Express 3500 Service and Repair Manual

This factory service and repair manual for the 2012 Chevrolet Express 3500 is arranged by system rather than by model, which suits a van sold in seven bodies and three trims. A three-door cargo van and a four-door passenger van share the same frame, brake and rear axle sections but diverge in glass, seating and body wiring. The engines are the turbocharged 6.6L diesel V8, the flex-fuel 4.8L V8 and the 6.0L V8 set up for compressed natural gas or flex-fuel operation.

Engines covered

• 6.6L V8 (403 cu in) — OHV, turbocharged, diesel
• 4.8L V8 (294 cu in) — OHV, naturally aspirated, flex-fuel
• 6.0L V8 (364 cu in) — OHV, naturally aspirated, CNG or flex-fuel

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
• 2-door cutaway van
• 4-door standard cargo van

Trims covered

• Base
• LS
• LT

Known issues on the 2012 Express 3500. Nothing is recorded against this year federally, neither recalls nor owner complaints. Read it for coverage instead: engine mechanical work with clearances and torque sequences for all three units, fuel and emissions procedures that differ by whether the van runs pump gasoline, an ethanol blend, natural gas or diesel, transmission and axle service, steering gear and suspension specifications, brake hydraulic and antilock diagnosis, and heating and air conditioning across both the cargo and passenger shells.