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1989 GMC C2500 1989 Sierra SLX Standard Cab Pickup

Repair services & inexpensive new parts for 1989 GMC C2500 1989 Sierra SLX Standard Cab Pickup with 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated engine.

The 1989 GMC C2500 Sierra SLX is a robust standard cab pickup known for its durability and workhorse capabilities. Equipped with a 5.0L V8 GAS OHV engine, this model delivers a solid performance typical of late 80s American trucks. Its naturally aspirated engine provides a reliable output, suitable for various towing and hauling tasks. With rear-wheel drive and a straightforward design, the C2500 is appreciated for its simplicity and ease of maintenance, making it a popular choice for those who need a dependable vehicle for heavy-duty use.

Common Issues

  • Fuel pump failures are relatively common and can lead to starting problems or engine stalling.
  • Transmission issues, particularly with the automatic transmission, may arise, including slipping or harsh shifting.
  • Rust is a known issue, especially in the cab corners and undercarriage, due to the vehicle's age.
  • Electrical problems such as faulty wiring or failing alternators can occur.

Maintenance Tips

  • Regularly check and replace the engine oil and filter every 3,000 to 5,000 miles to ensure longevity.
  • Inspect the brake system, including pads and rotors, for wear and replace them as necessary.
  • Flush and replace the coolant every two years to prevent overheating and engine damage.
  • Lubricate chassis components periodically to maintain smooth operation.

Typical Repair/Ownership Cost Ranges

  • Fuel pump replacement: $150 - $400
  • Transmission repair or rebuild: $1,000 - $3,500
  • Brake pad and rotor replacement: $250 - $600
  • Alternator replacement: $200 - $500

Buying Advice

  • Inspect the body for rust, paying particular attention to the cab corners and undercarriage.
  • Check the condition of the engine and transmission, looking for any leaks or unusual noises.
  • Verify the functionality of the electrical system, including lights and dashboard gauges.
  • Test drive the vehicle to assess the performance of the brakes, steering, and suspension.

Frequently Asked Questions

  • What is the towing capacity of the 1989 GMC C2500? The towing capacity is typically around 7,500 to 10,000 pounds, depending on the vehicle's configuration and condition.
  • What type of fuel does the 1989 GMC C2500 use? It uses regular unleaded gasoline.
  • How reliable is the 1989 GMC C2500? The C2500 is generally considered reliable, especially if well-maintained, with many owners reporting long service life.
  • What is the average fuel economy of the 1989 GMC C2500? The average fuel economy is approximately 12-15 miles per gallon, depending on driving conditions and maintenance.
  • How often should the transmission fluid be changed? It is recommended to change the transmission fluid every 30,000 to 60,000 miles.

Have Questions about GMC C2500 1989 Sierra SLX? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: GMC
Model: C2500
Trim: Sierra SLX Standard Cab Pickup 2-Door
Year: 1989

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 5.0L
Engine CC: N/A
Engine CID: 305
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 8
Drive: RWD
Body Type: Standard Cab Pickup
Doors: 2

Repair services & inexpensive new parts for 1989 GMC C2500 1989 Sierra SLX Standard Cab Pickup with 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated engine.