2001 Chevrolet Express 3500 Service and Repair Manual

This factory service and repair manual for the 2001 Chevrolet Express 3500 has an unusual three-engine spread to explain: an 8.1L V8 of 496 cubic inches, a turbocharged 6.5L diesel V8 of 395, and a 5.7L V8 of 350 able to run on compressed natural gas as well as gasoline. That last option matters in service, because tank, regulator and injection coverage differs from the gasoline-only version. Five body configurations and two trims, Base and LS, complete the range.

Engines covered

• 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, CNG or gasoline
• 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 3-door extended cargo van
• 3-door standard cargo van
• 3-door extended passenger van
• 3-door standard passenger van
• 2-door cutaway van

Trims covered

• Base
• LS

Known issues on the 2001 Express 3500. The federal record carries one recall, on replacement oil filters that may not seal and can let the engine shed its oil, raising a fire risk. Eleven complaints are logged, led by three on tires, then two each on the service brakes and on engine and cooling. Those last two point straight into sections a technician uses often: coolant flow and thermostat testing, radiator and fan diagnosis, brake hydraulic specifications and bleeding order, plus torque values for hub, caliper and wheel fasteners.