1999 GMC Savana 3500

Introduction The 1999 GMC Savana 3500 is a versatile, full-size van offered with several engine and transmission options. The Vortec 5700 engine produces 255 horsepower and 430 lb-ft of torque, while the Vortec 6000 engine generates 300 horsepower and 360 lb-ft of torque. Transmission options include a 4-speed automatic 4L80E transmission and a 5-speed manual NV4500 transmission. The Savana’s strong points include its spacious interior, versatile cargo configurations, and robust towing capacity. However, it has been plagued by numerous issues that can affect its reliability and performance.

Engine

• Vortec 5700
  • Intake Manifold Gasket Failure: Symptoms include coolant leaks, overheating, and rough idling. Solution: Replace the intake manifold gasket. Estimated Cost to Fix: $300 - $500+
  • Head Gasket Failure: Symptoms include white smoke from the exhaust, coolant loss, and overheating. Solution: Replace the head gaskets. Estimated Cost to Fix: $1,000 - $2,000+
• Vortec 6000
  • Piston Ring Failure: Symptoms include excessive oil consumption and blue smoke from the exhaust. Solution: Rebuild or replace the engine. Estimated Cost to Fix: $3,000 - $5,000+
  • Crankshaft Sensor Failure: Symptoms include engine stalling or difficulty starting. Solution: Replace the crankshaft sensor. Estimated Cost to Fix: $200 - $300+

Transmission

• 4L80E Automatic Transmission
  • Torque Converter Failure: Symptoms include slipping gears, overheating, and loss of power. Solution: Replace the torque converter. Estimated Cost to Fix: $500 - $1,000+
  • Valve Body Failure: Symptoms include erratic shifting, transmission slipping, and difficulty engaging gears. Solution: Replace the valve body. Estimated Cost to Fix: $300 - $500+
• NV4500 Manual Transmission
  • Synchronizer Failure: Symptoms include grinding noises when shifting, difficulty engaging gears, and popping out of gear. Solution: Replace the synchronizers. Estimated Cost to Fix: $400 - $600+
  • Clutch Failure: Symptoms include slipping clutch, difficulty shifting gears, and grinding noises. Solution: Replace the clutch. Estimated Cost to Fix: $500 - $800+

Suspension

• Ball Joint Failure: Symptoms include clunking noises, excessive play in the steering, and uneven tire wear. Solution: Replace the ball joints. Estimated Cost to Fix: $200 - $400+
• Shock Absorber Failure: Symptoms include excessive bouncing, poor handling, and reduced braking efficiency. Solution: Replace the shock absorbers. Estimated Cost to Fix: $200 - $400+

Electrical

• Alternator Failure: Symptoms include dim headlights, flickering lights, and electrical component failure. Solution: Replace the alternator. Estimated Cost to Fix: $300 - $500+
• Battery Failure: Symptoms include difficulty starting, electrical component failure, and dim lights. Solution: Replace the battery. Estimated Cost to Fix: $100 - $200+

Exterior

• Door Handle Failure: Symptoms include difficulty opening doors, loose handles, and broken handles. Solution: Replace the door handles. Estimated Cost to Fix: $100 - $200+

Interior

• Climate Control System Failure: Symptoms include inoperative air conditioning, heating, and ventilation. Solution: Repair or replace various components of the climate control system. Estimated Cost to Fix: $200 - $1,000+
• Seat Belt Buckle Failure: Symptoms include difficulty buckling or unbuckling seat belts and loose or broken buckles. Solution: Replace the seat belt buckles. Estimated Cost to Fix: $100 - $200+

Summary The 1999 GMC Savana 3500 is a capable but problematic vehicle. The numerous issues it faces, especially with its engine, transmission, and suspension, can lead to significant repair costs and downtime. While some issues are relatively inexpensive to fix, others can be quite costly, especially engine and transmission rebuilds. Potential buyers should be aware of these issues and factor in potential repair costs before making a purchase decision.