2003 Chevrolet Silverado 3500 Service and Repair Manual

This factory service and repair manual for the 2003 Chevrolet Silverado 3500 has a fuel change to account for: the 6.0L V8 is listed here as running gasoline or CNG, which alters what the fuel and emissions procedures address. Alongside it sit the turbocharged 6.6L diesel and the 8.1L and 5.7L gasoline V8s, across five body configurations from standard cab pickup to cab and chassis, in Base, HD, LS and LT trim, with specifications and torque values set out system by system.

Engines covered

• 6.6L V8 (403 cu in) — OHV, turbocharged, diesel
• 6.0L V8 (364 cu in) — OHV, naturally aspirated, gasoline or CNG
• 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door standard cab pickup
• 4-door extended cab pickup
• 4-door crew cab pickup
• 4-door cab & chassis
• 2-door cab & chassis

Trims covered

• Base
• HD
• LS
• LT

Known issues on the 2003 Silverado 3500. Eight recalls sit on the federal record. Three go beyond lighting: a second-row center belt routed so the lap portion rides up onto the abdomen rather than sitting low on the hips, a windshield bonded without a continuous urethane bead so it may not stay in place in a crash, and replacement wheel hub assemblies that can let a wheel separate. The rest concern lamps sold without amber side reflectors and a miswired trailer adaptor. Complaints total 2,119 — 936 on the service brakes, 396 on the electrical system, 165 on steering.