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1988 GMC S15 1988 High Sierra Extended Cab Pickup

Repair services & inexpensive new parts for 1988 GMC S15 1988 High Sierra Extended Cab Pickup with 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated engine.

The 1988 GMC S15 High Sierra Extended Cab Pickup is a versatile and robust vehicle equipped with a 4.3L V6 engine, known for its durability and performance in various driving conditions. This rear-wheel drive (RWD) pickup features a 2-door extended cab design, making it suitable for both work and leisure activities. While it offers decent power and fuel efficiency for its time, owners should be aware of common maintenance needs and potential repairs to ensure longevity and reliability.

Common Issues

Some common issues reported with the 1988 GMC S15 include:

  • Rust and corrosion, particularly in the body and frame.
  • Electrical system failures, including issues with the starter and alternator.
  • Fuel system problems, such as clogged fuel filters or failing fuel pumps.
  • Overheating due to radiator or cooling system failures.

Maintenance Tips

To keep your GMC S15 running smoothly, consider the following maintenance tips:

  • Regular oil changes every 3,000 to 5,000 miles.
  • Inspect and replace air and fuel filters as needed.
  • Check the brakes and tires regularly for wear.
  • Flush and replace the coolant system periodically.

Typical Repair/Owership Cost Ranges

Repair and ownership costs can vary widely based on condition and usage. Typical ranges include:

  • Routine maintenance: $300-$600 annually.
  • Minor repairs (brakes, exhaust): $150-$500.
  • Major repairs (engine, transmission): $1,000-$3,000.

Buying Advice (What to Inspect)

If you're considering purchasing a 1988 GMC S15, inspect the following areas:

  • Check for signs of rust, especially in the frame and undercarriage.
  • Test the electrical systems, including lights and power accessories.
  • Inspect the engine for leaks or unusual noises.
  • Examine the condition of the tires and brakes.

FAQ

  • What is the fuel efficiency of the 1988 GMC S15? The average fuel efficiency is around 15-20 miles per gallon, depending on driving conditions.
  • What type of oil is recommended for the engine? Using 10W-30 motor oil is typically recommended for the 4.3L V6 engine.
  • Are parts for the GMC S15 easy to find? Yes, many parts are available from various aftermarket suppliers and junkyards.
  • How often should I change the transmission fluid? It's recommended to change the transmission fluid every 30,000 to 50,000 miles.
  • What are common upgrades for this model? Common upgrades include improved exhaust systems, performance chips, and suspension enhancements.
  • How reliable is the GMC S15? With proper maintenance, the S15 is generally considered a reliable vehicle.
  • Can I tow with the GMC S15? Yes, the S15 has a towing capacity of around 3,000 pounds when properly equipped.
  • What should I do if the engine overheats? Stop driving immediately, check coolant levels, and inspect for leaks before seeking professional help.

Have Questions about GMC S15 1988 High Sierra? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: GMC
Model: S15
Trim: High Sierra Extended Cab Pickup 2-Door
Year: 1988

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 4.3L
Engine CC: N/A
Engine CID: 262
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 6
Drive: RWD
Body Type: Extended Cab Pickup
Doors: 2

Repair services & inexpensive new parts for 1988 GMC S15 1988 High Sierra Extended Cab Pickup with 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated engine.