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1977 GMC C35 1977 High Sierra Cab & Chassis

Repair services & inexpensive new parts for 1977 GMC C35 1977 High Sierra Cab & Chassis with 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated engine.

The 1977 GMC C35 High Sierra Cab & Chassis is a robust, rear-wheel-drive workhorse known for its durable build and reliable 5.7L 350Cu. In. V8 gasoline engine. This model, part of GMC's long-running C/K series, features a naturally aspirated OHV design with eight cylinders, offering a solid balance of power and simplicity. It's a versatile vehicle ideal for various utility and hauling tasks, maintaining its popularity among enthusiasts and collectors due to its classic design and mechanical straightforwardness. 1977 GMC C35 High Sierra Overview

Common Issues

  • Carburetor problems leading to poor fuel efficiency or starting issues.
  • Rust, particularly in the undercarriage and around the wheel wells.
  • Transmission wear, especially if not regularly maintained.
  • Electrical issues due to aging wiring.

Maintenance Tips

  • Regularly check and clean the carburetor to ensure optimal fuel efficiency.
  • Inspect and treat any rust-prone areas to prevent corrosion.
  • Change transmission fluid every 30,000 miles to ensure smooth shifting.
  • Inspect and replace old wiring to prevent electrical failures.
  • Regular oil changes and engine tune-ups to maintain performance.

Typical Repair/Ownership Cost Ranges

  • Basic maintenance: $200 - $400 annually.
  • Carburetor repair/replacement: $150 - $500.
  • Transmission servicing: $300 - $1,000.
  • Rust repair: $100 - $1,500 depending on severity.

Buying Advice

  • Inspect for rust, especially in the chassis and undercarriage.
  • Check the condition of the carburetor and fuel system.
  • Test drive to evaluate transmission performance and listen for unusual noises.
  • Verify the condition of the electrical system, checking for any brittle wiring.
  • Ask for maintenance records to ensure regular servicing.

FAQ

What is the average fuel efficiency of the 1977 GMC C35?

The average fuel efficiency is around 10-15 miles per gallon, depending on driving conditions and maintenance.

How often should the oil be changed?

Oil should be changed every 3,000 to 5,000 miles to maintain engine health.

Are parts readily available for this model?

Yes, parts are relatively easy to find, especially through specialty suppliers and online retailers focused on classic vehicles.

What is the towing capacity of the 1977 GMC C35?

The towing capacity is approximately 8,000 to 10,000 pounds, depending on the configuration and condition.

Does the 1977 GMC C35 have power steering?

Yes, power steering was an available option for this model year.

Have Questions about GMC C35 1977 High Sierra? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: GMC
Model: C35
Trim: High Sierra Cab & Chassis 2-Door
Year: 1977

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 5.7L
Engine CC: N/A
Engine CID: 350
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 8
Drive: RWD
Body Type: Cab & Chassis
Doors: 2

Repair services & inexpensive new parts for 1977 GMC C35 1977 High Sierra Cab & Chassis with 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated engine.