1979 GMC C3500 1979 High Sierra Crew Cab Pickup

Common Issues

• Rust, particularly in the body panels and frame.
• Wear in the suspension components due to age.
• Fuel system issues, such as a clogged carburetor.
• Electrical problems, often related to old wiring.

Maintenance Tips

• Regularly check and treat any rust spots to prevent spread.
• Maintain the suspension and replace worn-out bushings and joints.
• Keep the carburetor clean and properly adjusted for optimal performance.
• Inspect and replace any deteriorating wiring or connections.

Typical Repair/Ownership Cost Ranges

• Engine tune-up: $150 - $300
• Suspension repairs: $200 - $800
• Rust repair and bodywork: $500 - $2,000
• Fuel system repairs: $100 - $600

Buying Advice

• Inspect for rust, especially on the undercarriage and body panels.
• Check the condition of the suspension components.
• Start the engine and listen for unusual sounds or vibrations.
• Examine the wiring for any signs of wear or damage.

FAQ

How reliable is the 1979 GMC C3500?

It is generally considered reliable, though regular maintenance is necessary to address common aging issues.

What kind of fuel economy can I expect?

Expect around 10-15 mpg, depending on driving conditions and load.

Is it easy to find replacement parts?

Many parts are available due to its popularity, but some may require sourcing from specialty suppliers.

What are the towing capabilities?

The truck is capable of towing moderate loads, typically up to 10,000 pounds, depending on condition and configuration.

Does it have modern safety features?

No, this model lacks modern safety features like airbags and ABS, as it was built before such systems were standard.