1991 GMC V2500 Suburban

Introduction

The 1991 GMC V2500 Suburban is a full-size SUV known for its spacious interior, powerful engine, and off-road capabilities. It is available with various engine and transmission options:

• Engine Options:
  • 5.7L V8 (210 hp, 300 lb-ft torque)
  • 7.4L V8 (230 hp, 385 lb-ft torque)
• Transmission Options:
  • 4L60 Hydra-Matic 4-speed automatic
  • 700R4 Hydra-Matic 4-speed automatic

Owners appreciate the Suburban’s reliability, towing capacity, and comfortable ride. However, it has been known to experience some common issues.

Engine

5.7L V8

• Intake Manifold Gasket Failure:
  • Description/Symptoms: Coolant or oil leaking from the intake manifold, rough idling, stalling
  • Solution: Replace intake manifold gasket
  • Estimated Cost to Fix: $300 - $500+
• Distributor Cap and Rotor Failure:
  • Description/Symptoms: Engine stumbling, misfiring, hard starting
  • Solution: Replace distributor cap and rotor
  • Estimated Cost to Fix: $100 - $200

7.4L V8

• No Known Issues Found

Transmission

4L60 Hydra-Matic 4-speed automatic

• Governor Pressure Sensor Failure:
  • Description/Symptoms: Erratic transmission shifting, slipping, or no movement
  • Solution: Replace governor pressure sensor
  • Estimated Cost to Fix: $200 - $300+
• Transmission Fluid Leak:
  • Description/Symptoms: Leaking transmission fluid under the vehicle
  • Solution: Repair or replace faulty seals or gaskets
  • Estimated Cost to Fix: $150 - $300+

700R4 Hydra-Matic 4-speed automatic

• Torque Converter Shudder:
  • Description/Symptoms: Vibration or shuddering during acceleration or gear changes
  • Solution: Replace torque converter
  • Estimated Cost to Fix: $500 - $800+

Suspension

• Front Ball Joint Wear:
  • Description/Symptoms: Clunking or popping noise while turning or over bumps
  • Solution: Replace ball joints
  • Estimated Cost to Fix: $200 - $400+
• Rear Leaf Spring Sagging:
  • Description/Symptoms: Rear of the vehicle sagging, reduced towing capacity
  • Solution: Replace leaf springs
  • Estimated Cost to Fix: $300 - $500+

Electrical

• Alternator Failure:
  • Description/Symptoms: Dimming lights, battery draining, difficulty starting
  • Solution: Replace alternator
  • Estimated Cost to Fix: $300 - $500+
• Starter Solenoid Failure:
  • Description/Symptoms: Engine failing to crank or starting intermittently
  • Solution: Replace starter solenoid
  • Estimated Cost to Fix: $100 - $200

Exterior

• Rust on Frame:
  • Description/Symptoms: Corrosion on the metal frame under the vehicle
  • Solution: Clean and apply rust treatment
  • Estimated Cost to Fix: $500 - $1000+

Interior

• Climate Control Malfunction:
  • Description/Symptoms: AC or heater not working or blowing hot/cold air intermittently
  • Solution: Diagnose and repair faulty components
  • Estimated Cost to Fix: $200 - $500+
• Power Window Motor Failure:
  • Description/Symptoms: Windows not operating or moving slowly
  • Solution: Replace power window motor
  • Estimated Cost to Fix: $100 - $200+

Summary

The 1991 GMC V2500 Suburban is a durable and capable vehicle, but it is not immune to certain issues. The most common problems include engine intake manifold gasket failure, transmission governor pressure sensor failure, and suspension wear. These issues can vary in severity and cost of repair, but most are relatively straightforward to address. Overall, with proper maintenance and repairs, the Suburban can be a reliable choice for those seeking a spacious and powerful SUV.