1990 GMC V2500 Suburban

Introduction

The 1990 GMC V2500 Suburban is a full-size SUV powered by a 5.7L V8 engine producing 210 horsepower and 300 lb-ft of torque, paired with a 4-speed automatic transmission. The Suburban is known for its spacious interior, comfortable ride, and towing capabilities. However, it has some reported issues that owners and mechanics should be aware of.

Engine

• 5.7L V8
  • Intake Manifold Gasket Failure
    • Description/Symptoms: Coolant or oil leaking from the intake manifold, causing overheating, poor performance, and engine damage.
    • Solution: Replace the intake manifold gaskets.
    • Estimated Cost to Fix: $500 - $1,000
    • Recalls: None Found
  • Throttle Position Sensor (TPS) Failure
    • Description/Symptoms: Engine stalling, hesitation, or poor acceleration due to incorrect throttle position readings.
    • Solution: Replace the TPS.
    • Estimated Cost to Fix: $150 - $250
    • Recalls: None Found
  • Valve Stem Seal Leakage
    • Description/Symptoms: Excessive oil consumption, blue smoke from the exhaust, and potential engine damage.
    • Solution: Replace the valve stem seals.
    • Estimated Cost to Fix: $1,500 - $2,500+
    • Recalls: None Found

Transmission

• 4-Speed Automatic
  • Torque Converter Lockup Failure
    • Description/Symptoms: Transmission slipping, shuddering, or overheating due to a malfunctioning torque converter.
    • Solution: Repair or replace the torque converter.
    • Estimated Cost to Fix: $1,000 - $2,000+
    • Recalls: None Found

Suspension

• Leaf Springs
  • Sagging
    • Description/Symptoms: Decreased ride height, uneven tire wear, and poor handling.
    • Solution: Replace the leaf springs.
    • Estimated Cost to Fix: $500 - $1,000 per axle
    • Recalls: None Found
• Shock Absorbers
  • Leaking or Worn Out
    • Description/Symptoms: Poor ride quality, excessive bounce, and reduced braking performance.
    • Solution: Replace the shock absorbers.
    • Estimated Cost to Fix: $200 - $500 per pair
    • Recalls: None Found

Electrical

• Alternator Failure
  • Description/Symptoms: Battery not charging, dimming lights, and electrical issues.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $300 - $600
    • Recalls: NHTSA Campaign ID 90V075003
• Battery Drain
  • Description/Symptoms: Battery losing power quickly when parked, even with no accessories running.
  • Solution: Test and replace the battery, alternator, and any faulty electrical components causing the drain.
  • Estimated Cost to Fix: $150 - $500+
    • Recalls: None Found

Exterior

• Door Handles
  • Breaking
    • Description/Symptoms: Door handles breaking off or becoming loose, making it difficult to open or close the doors.
    • Solution: Replace the door handles.
    • Estimated Cost to Fix: $100 - $200 per door
    • Recalls: None Found

Interior

• Dashboard Lights Burning Out
  • Description/Symptoms: Dashboard lights, such as those for the instrument panel or climate controls, failing and becoming inoperable.
  • Solution: Replace the faulty bulbs or wiring.
  • Estimated Cost to Fix: $50 - $200
    • Recalls: None Found
• Air Conditioner Compressor Failure
  • Description/Symptoms: Air conditioning not blowing cold air, or making a grinding noise.
  • Solution: Replace the compressor or check for refrigerant leaks.
  • Estimated Cost to Fix: $800 - $1,500
    • Recalls: None Found

Summary

The 1990 GMC V2500 Suburban has several common issues that owners may experience. While some issues are relatively minor and inexpensive to fix, others can be more severe and costly. Potential problems include intake manifold gasket failure, TPS failure, transmission torque converter lockup failure, sagging leaf springs, electrical problems, door handle breakage, dashboard light burnout, and air conditioner compressor failure. It’s important for owners to be aware of these potential issues and have them addressed promptly to maintain the vehicle’s reliability and safety.