1991 Chevrolet Commercial Chassis Service and Repair Manual

This factory service and repair manual for the 1991 Chevrolet Commercial Chassis covers the platform in its two cataloged forms, the Base Hearse two-door and the Base Limousine four-door, with a choice of two engines: a naturally aspirated 5.0L overhead-valve V8 of 305 cubic inches and a naturally aspirated 5.7L overhead-valve V8 of 350. The division in the book follows that arrangement, with engine mechanical, fuel, ignition and emissions data given per displacement and the chassis, driveline, brake, steering and body electrical sections shared by both.

Engines covered

• 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door hearse
• 4-door limousine

Trims covered

• Base

Known issues on the 1991 Commercial Chassis. For two V8s and a chassis, the manual's coverage is thorough. Both the 305 and the 350 get mechanical procedures, specifications and torque values, along with fuel, ignition, charging and cooling diagnostics. The chassis material takes in the frame, driveline, brakes, steering and suspension, and the wiring diagrams document the vehicle's original circuits rather than approximating them.