Cover shows light wear and a bent corner, but all pages are complete, clean, and fully readable.

✅ What you see is exactly what you’ll receive. Ships fast and well-packaged.

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Description:

This is the original 1991 GM Medium Duty Service Manual covering Chevrolet and GMC P4 and B6 models. This factory-issued manual is packed with detailed service, diagnostic, and repair procedures.

Covers:

✔️ Chassis, suspension, and steering

✔️ Gas & diesel engines (including 6.2, 6.5, 7.0L)

✔️ Brakes – hydraulic & air

✔️ Transmission (manual & automatic)

✔️ Electrical systems, instruments, and alarms

✔️ Emissions and driveability

GM Publication Number: X-9134

Printed by: GMC Truck / Chevrolet Medium Duty Division, 1990

Ideal for fleet mechanics, restorers, and medium-duty truck specialists.